Tuesday, October 25, 2016

Glucosamin




Glucosamin may be available in the countries listed below.


Ingredient matches for Glucosamin



Glucosamine

Glucosamine is reported as an ingredient of Glucosamin in the following countries:


  • Serbia

Glucosamine sulfate (a derivative of Glucosamine) is reported as an ingredient of Glucosamin in the following countries:


  • Taiwan

International Drug Name Search

Darvon-N


Pronunciation: proe-POX-ih-feen
Generic Name: Propoxyphene
Brand Name: Darvon and Darvon-N

Darvon-N should not be used by people who are suicidal or who easily become addicted to medicines, alcohol, or other substances. Do not take more of Darvon-N than the dose your doctor prescribed. Taking excessive doses of Darvon-N by itself, with other medicines, or with alcohol may cause serious side effects and could be fatal. Limit the amount of alcohol you drink while you are taking Darvon-N. Tell your doctor if you have a history of any substance abuse, mood or mental disorders, suicidal thoughts or attempts, or if you take any medicines that cause drowsiness such as tranquilizers, sleep medicines, muscle relaxers, or antidepressants.





Darvon-N is used for:

Relieving mild to moderate pain.


Darvon-N is a narcotic analgesic. It works in the brain to decrease pain.


Do NOT use Darvon-N if:


  • you are allergic to any ingredient in Darvon-N

  • you have severe diarrhea caused by antibiotic use (pseudomembranous colitis) or poisoning

  • you are taking sodium oxybate (GHB)

Contact your doctor or health care provider right away if any of these apply to you.



Before using Darvon-N:


Some medical conditions may interact with Darvon-N. Tell your health care provider if you have any medical conditions, especially if any of the following apply to you:


  • if you are pregnant, planning to become pregnant, or are breast-feeding

  • if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement

  • if you have allergies to medicines, foods, or other substances

  • if you have prostate problems, liver problems (eg, hepatitis), or kidney problems

  • if you have a history of drug abuse or dependence or depression or have ever seriously considered suicide

  • if you have had a head injury, increased pressure in your brain, growths in your brain, or seizures

  • if you have inflammatory bowel problems or ulcers, urinary problems, or you have had abdominal surgery

  • if you have lung or breathing problems (eg, asthma), thyroid problems, heart problems, or certain blood problems (porphyria)

Some MEDICINES MAY INTERACT with Darvon-N. Tell your health care provider if you are taking any other medicines, especially any of the following:


  • Anticoagulants (eg, warfarin) because side effects, including an increased risk of bleeding, may be increased by Darvon-N

  • Carbamazepine because the risk of severe side effects and toxicity, including nausea, vomiting, loss of coordination, and involuntary eye movements, may occur

  • Antidepressant medicines (eg, amitriptyline, phenelzine), anticonvulsants (eg, phenobarbital, phenytoin), barbiturate anesthetics (eg, thiopental), cimetidine, HIV protease inhibitors (eg, ritonavir), and terfenadine because side effects may be increased by Darvon-N

  • Naltrexone because the effectiveness of Darvon-N may be decreased

  • Sodium oxybate (GHB) because side effects, including increased risk of sleep duration and drowsiness leading to unresponsiveness and coma, may be increased by Darvon-N

This may not be a complete list of all interactions that may occur. Ask your health care provider if Darvon-N may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.


How to use Darvon-N:


Use Darvon-N as directed by your doctor. Check the label on the medicine for exact dosing instructions.


  • Darvon-N may be taken with or without food. If stomach upset occurs, take with food to reduce stomach irritation.

  • Darvon-N comes with an additional patient leaflet. Read it carefully and reread it each time you get Darvon-N refilled.

  • Do not take more than your prescribed dose or take Darvon-N for longer than prescribed by your health care provider.

  • If you miss a dose of Darvon-N and you are taking it regularly, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.

Ask your health care provider any questions you may have about how to use Darvon-N.



Important safety information:


  • Darvon-N may cause drowsiness or dizziness. Do not drive, operate machinery, or do anything else that could be dangerous until you know how you react to Darvon-N. Using Darvon-N alone, with certain other medicines, or with alcohol may lessen your ability to drive or perform other potentially dangerous tasks.

  • Use of alcohol with Darvon-N may cause serious side effects. Limit your intake of alcohol while taking Darvon-N. If you drink alcohol every day, do not take Darvon-N without talking to your health care provider first. The combination of Darvon-N and alcohol may cause liver damage.

  • Make sure your health care provider knows if you are taking tranquilizers, sleep aids, antidepressant medicines, antihistamines, or any other medicines that may make you sleepy. The combination of these products with Darvon-N may lead to serious side effects, including death.

  • If you experience dizziness, drowsiness, nausea, or vomiting, it may help to lie down.

  • Before you have any medical or dental treatments, emergency care, or surgery, tell the doctor or dentist that you are using Darvon-N.

  • Darvon-N may be habit-forming. Do not take more than the dose prescribed by your doctor or take Darvon-N for a longer period of time than prescribed by your doctor.

  • Use Darvon-N with caution in the ELDERLY because they may be more sensitive to its effects.

  • Use Darvon-N with extreme caution in CHILDREN. Use of Darvon-N is not recommended in CHILDREN younger than 12 years of age. Safety and effectiveness in this age group have not been confirmed.

  • PREGNANCY and BREAST-FEEDING: If you become pregnant, discuss with your doctor the benefits and risks of using Darvon-N during pregnancy. Darvon-N is excreted in breast milk. If you are or will be breast-feeding while you are using Darvon-N, check with your doctor or pharmacist to discuss the risks to your baby.

When used for long periods of time or at high doses, Darvon-N may not work as well and may require higher doses to obtain the same effect as when originally taken. This is known as TOLERANCE. Talk with your doctor if Darvon-N stops working well. Do not take more than prescribed.


Darvon-N can cause DEPENDENCE if taken in higher doses than recommended by your health care provider or over a long period of time. Take Darvon-N exactly as prescribed by your health care provider. If you suddenly stop taking Darvon-N, you may experience WITHDRAWAL symptoms including anxiety; diarrhea; fever, runny nose, or sneezing; goosebumps and abnormal skin sensations; nausea; pain; rapid heartbeat; rigid muscles; seeing, hearing, or feeling things that are not there; shivering or tremors; sweating; trouble sleeping; and vomiting.



Possible side effects of Darvon-N:


All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:



Constipation; dizziness; drowsiness; lightheadedness; nausea; vomiting.



Seek medical attention right away if any of these SEVERE side effects occur:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); anxiety; cold or clammy skin; confusion; excessive sweating; hallucinations; loss of appetite; loss of consciousness; mental or mood changes; seizures; severe drowsiness or dizziness; severe or persistent stomach pain; vision changes; weakness; yellowing of the skin or eyes.



This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.


See also: Darvon-N side effects (in more detail)


If OVERDOSE is suspected:


Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center, or emergency room immediately. Symptoms may include anxiety; confusion; dilated pupils; irregular heartbeat; muscle pain; severe drowsiness or dizziness; slow or difficult breathing; weakness.


Proper storage of Darvon-N:

Store Darvon-N at room temperature, between 68 and 77 degrees F (20 and 25 degrees C), in a tightly closed container. Store away from heat, moisture, and light. Brief storage at temperatures between 59 and 86 degrees F (15 and 30 degrees C) is permitted. Keep Darvon-N out of the reach of children and away from pets.


General information:


  • If you have any questions about Darvon-N, please talk with your doctor, pharmacist, or other health care provider.

  • Darvon-N is to be used only by the patient for whom it is prescribed. Do not share it with other people.

  • If your symptoms do not improve or if they become worse, check with your doctor.

  • Check with your pharmacist about how to dispose of unused medicine.

This information is a summary only. It does not contain all information about Darvon-N. If you have questions about the medicine you are taking or would like more information, check with your doctor, pharmacist, or other health care provider.



Issue Date: February 1, 2012

Database Edition 12.1.1.002

Copyright © 2012 Wolters Kluwer Health, Inc.

More Darvon-N resources


  • Darvon-N Side Effects (in more detail)
  • Darvon-N Use in Pregnancy & Breastfeeding
  • Drug Images
  • Darvon-N Drug Interactions
  • Darvon-N Support Group
  • 1 Review for Darvon-N - Add your own review/rating


  • Darvon-N Prescribing Information (FDA)

  • Darvon-N Advanced Consumer (Micromedex) - Includes Dosage Information

  • Darvon-N Concise Consumer Information (Cerner Multum)

  • Propoxyphene Professional Patient Advice (Wolters Kluwer)

  • Darvon Prescribing Information (FDA)

  • Propoxyphene Hydrochloride Monograph (AHFS DI)



Compare Darvon-N with other medications


  • Pain

Monday, October 24, 2016

DexPak 6 DayTaperpak


Generic Name: dexamethasone (oral) (dex a METH a sone)

Brand Names: Baycadron, Dexamethasone Intensol, DexPak 10 Day Taperpak, DexPak 13 DayTaperpak, DexPak 6 DayTaperpak, Dexpak Jr. Taperpak, Zema Pak 10-Day, Zema Pak 13-Day, Zema Pak 6-Day


What is dexamethasone?

Dexamethasone is a steroid that prevents the release of substances in the body that cause inflammation.


Dexamethasone is used to treat many different conditions such as allergic disorders, skin conditions, ulcerative colitis, arthritis, lupus, psoriasis, or breathing disorders.


Dexamethasone may also be used for purposes not listed in this medication guide.


What is the most important information I should know about dexamethasone?


You should not use this medication if you are allergic to dexamethasone, or if you have a fungal infection anywhere in your body.

Before taking dexamethasone, tell your doctor about all of your medical conditions, and about all other medicines you are using. There are many other diseases that can be affected by steroid use, and many other medicines that can interact with steroids.


Your steroid medication needs may change if you have any unusual stress such as a serious illness, fever or infection, or if you have surgery or a medical emergency. Tell your doctor about any such situation that affects you during treatment.


Steroid medication can weaken your immune system, making it easier for you to get an infection or worsening an infection you already have or have recently had. Tell your doctor about any illness or infection you have had within the past several weeks.


Avoid being near people who are sick or have infections. Call your doctor for preventive treatment if you are exposed to chicken pox or measles. These conditions can be serious or even fatal in people who are using steroid medication.


Do not receive a "live" vaccine while you are taking dexamethasone. Vaccines may not work as well while you are taking a steroid.


Do not stop using dexamethasone suddenly, or you could have unpleasant withdrawal symptoms. Talk to your doctor about how to avoid withdrawal symptoms when stopping the medication. Wear a medical alert tag or carry an ID card stating that you take dexamethasone. Any medical care provider who treats you should know that you are using a steroid.

What should I discuss with my healthcare provider before taking dexamethasone?


You should not use this medication if you are allergic to dexamethasone, or if you have a fungal infection anywhere in your body.

Steroid medication can weaken your immune system, making it easier for you to get an infection. Steroids can also worsen an infection you already have, or reactivate an infection you recently had. Before taking this medication, tell your doctor about any illness or infection you have had within the past several weeks.


To make sure you can safely take dexamethasone, tell your doctor if you have any of these other conditions:



  • liver disease (such as cirrhosis);




  • kidney disease;




  • a thyroid disorder;




  • diabetes;




  • a history of malaria;




  • tuberculosis;




  • osteoporosis;




  • a muscle disorder such as myasthenia gravis;




  • glaucoma or cataracts;




  • herpes infection of the eyes;




  • stomach ulcers, ulcerative colitis, or diverticulitis;




  • depression or mental illness;




  • congestive heart failure; or




  • high blood pressure




FDA pregnancy category C. It is not known whether dexamethasone will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication. Dexamethasone can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby. Steroids can affect growth in children. Talk with your doctor if you think your child is not growing at a normal rate while using this medication.

How should I take dexamethasone?


Take exactly as prescribed by your doctor. Do not take in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label.


Your doctor may occasionally change your dose to make sure you get the best results.


Your steroid medication needs may change if you have unusual stress such as a serious illness, fever or infection, or if you have surgery or a medical emergency. Tell your doctor about any such situation that affects you.


This medication can cause unusual results with certain medical tests. Tell any doctor who treats you that you are using dexamethasone.


Do not stop using dexamethasone suddenly, or you could have unpleasant withdrawal symptoms. Talk to your doctor about how to avoid withdrawal symptoms when stopping the medication. Wear a medical alert tag or carry an ID card stating that you take dexamethasone. Any medical care provider who treats you should know that you are using steroid medication. Store at room temperature away from moisture and heat.

What happens if I miss a dose?


Call your doctor for instructions if you miss a dose of dexamethasone.


What happens if I overdose?


Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Long-term use of high steroid doses can lead to symptoms such as thinning skin, easy bruising, changes in the shape or location of body fat (especially in your face, neck, back, and waist), increased acne or facial hair, menstrual problems, impotence, or loss of interest in sex.


What should I avoid while taking dexamethasone?


Avoid being near people who are sick or have infections. Call your doctor for preventive treatment if you are exposed to chicken pox or measles. These conditions can be serious or even fatal in people who are using steroid medication.


Do not receive a "live" vaccine while using dexamethasone. The vaccine may not work as well during this time, and may not fully protect you from disease. Live vaccines include measles, mumps, rubella (MMR), oral polio, rotavirus, typhoid, varicella (chickenpox), H1N1 influenza, and nasal flu vaccine. Avoid drinking alcohol while you are taking dexamethasone.

Dexamethasone side effects


Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Call your doctor at once if you have a serious side effect such as:

  • problems with your vision;




  • swelling, rapid weight gain, feeling short of breath;




  • severe depression, unusual thoughts or behavior, seizure (convulsions);




  • bloody or tarry stools, coughing up blood;




  • pancreatitis (severe pain in your upper stomach spreading to your back, nausea and vomiting, fast heart rate);




  • low potassium (confusion, uneven heart rate, extreme thirst, increased urination, leg discomfort, muscle weakness or limp feeling); or




  • dangerously high blood pressure (severe headache, blurred vision, buzzing in your ears, anxiety, confusion, chest pain, shortness of breath, uneven heartbeats, seizure).



Less serious side effects may include:



  • sleep problems (insomnia), mood changes;




  • acne, dry skin, thinning skin, bruising or discoloration;




  • slow wound healing;




  • increased sweating;




  • headache, dizziness, spinning sensation;




  • nausea, stomach pain, bloating;




  • muscle weakness; or




  • changes in the shape or location of body fat (especially in your arms, legs, face, neck, breasts, and waist).



This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.


What other drugs will affect dexamethasone?


Many drugs can interact with dexamethasone. Below is just a partial list. Tell your doctor if you are using:



  • aspirin (taken on a daily basis or at high doses);




  • a diuretic (water pill);




  • a blood thinner such as warfarin (Coumadin);




  • cyclosporine (Gengraf, Neoral, Sandimmune);




  • insulin or diabetes medications you take by mouth;




  • ketoconazole (Nizoral);




  • rifampin (Rifadin, Rifater, Rifamate, Rimactane); or




  • seizure medications such as phenytoin (Dilantin) or phenobarbital (Luminal, Solfoton).



This list is not complete and other drugs may interact with dexamethasone. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.



More DexPak 6 DayTaperpak resources


  • DexPak 6 DayTaperpak Side Effects (in more detail)
  • DexPak 6 DayTaperpak Use in Pregnancy & Breastfeeding
  • DexPak 6 DayTaperpak Drug Interactions
  • DexPak 6 DayTaperpak Support Group
  • 2 Reviews for DexPak 6 DayTaperpak - Add your own review/rating


  • Dexamethasone Prescribing Information (FDA)

  • Dexamethasone Monograph (AHFS DI)

  • Dexamethasone Professional Patient Advice (Wolters Kluwer)

  • Baycadron Prescribing Information (FDA)

  • Decadron Advanced Consumer (Micromedex) - Includes Dosage Information

  • Decadron MedFacts Consumer Leaflet (Wolters Kluwer)

  • Decadron Prescribing Information (FDA)

  • DexPak 10 Day TaperPak Prescribing Information (FDA)

  • Dexamethasone Sodium Phosphate eent Monograph (AHFS DI)



Compare DexPak 6 DayTaperpak with other medications


  • Addison's Disease
  • Adrenal Insufficiency
  • Adrenocortical Insufficiency
  • Adrenogenital Syndrome
  • Ankylosing Spondylitis
  • Aspiration Pneumonia
  • Asthma
  • Asthma, acute
  • Atopic Dermatitis
  • Bronchopulmonary Dysplasia
  • Bursitis
  • Cerebral Edema
  • Chorioretinitis
  • Croup
  • Cushing's Syndrome
  • Dermatitis Herpetiformis
  • Eczema
  • Epicondylitis, Tennis Elbow
  • Erythroblastopenia
  • Evan's Syndrome
  • Gouty Arthritis
  • Hay Fever
  • Hemolytic Anemia
  • Hypercalcemia of Malignancy
  • Idiopathic Thrombocytopenic Purpura
  • Inflammatory Bowel Disease
  • Inflammatory Conditions
  • Iridocyclitis
  • Iritis
  • Juvenile Rheumatoid Arthritis
  • Keratitis
  • Leukemia
  • Loeffler's Syndrome
  • Lymphoma
  • Meningitis, Haemophilus influenzae
  • Meningitis, Listeriosis
  • Meningitis, Meningococcal
  • Meningitis, Pneumococcal
  • Mountain Sickness / Altitude Sickness
  • Multiple Myeloma
  • Multiple Sclerosis
  • Mycosis Fungoides
  • Nausea/Vomiting, Chemotherapy Induced
  • Neurosarcoidosis
  • Pemphigus
  • Psoriatic Arthritis
  • Pulmonary Tuberculosis
  • Rheumatoid Arthritis
  • Sarcoidosis
  • Seborrheic Dermatitis
  • Shock
  • Synovitis
  • Systemic Lupus Erythematosus
  • Thrombocytopenia
  • Toxic Epidermal Necrolysis
  • Tuberculous Meningitis
  • Ulcerative Colitis
  • Uveitis, Posterior


Where can I get more information?


  • Your pharmacist can provide more information about dexamethasone.

See also: DexPak 6 DayTaperpak side effects (in more detail)


Danazol




Danazol CAPSULES, USP

Rx only

Danazol Description


Danazol is a synthetic steroid derived from ethisterone. It is a white to pale yellow crystalline powder, practically insoluble or insoluble in water, and sparingly soluble in alcohol. Chemically, Danazol is 17α-Pregna-2, 4-dien-20-yno [2, 3-d]-isoxazol-17-ol. The molecular formula is C22H27NO2. It has a molecular weight of 337.46 and the following structural formula:



Danazol capsules for oral administration contain 50 mg, 100 mg, or 200 mg Danazol.


Inactive Ingredients: anhydrous lactose, lactose monohydrate, magnesium stearate, pregelatinized starch, sodium lauryl sulfate, talc. Capsule shells for 200 mg Danazol contain D&C Yellow #10, FD&C Red #40, D&C Red #28, gelatin, and titanium dioxide. Capsule shells for 50 mg and 100 mg Danazol contain D&C Yellow # 10, FD&C Red # 40, gelatin, and titanium dioxide. The capsule imprinting ink contains: shellac glaze in ethanol, iron oxide black, n-butyl alcohol, propylene glycol, ethanol, methanol, FD&C Blue No. 2 Aluminum Lake, FD&C Red No. 40 Aluminum Lake, FD&C Blue No. 1 Aluminum Lake, and D&C Yellow No. 10 Aluminum Lake.



Danazol - Clinical Pharmacology


Danazol suppresses the pituitary-ovarian axis. This suppression is probably a combination of depressed hypothalamic-pituitary response to lowered estrogen production, the alteration of sex steroid metabolism, and interaction of Danazol with sex hormone receptors. The only other demonstrable hormonal effect is weak androgenic activity. Danazol depresses the output of both follicle-stimulating hormone (FSH) and luteinizing hormone (LH).


Recent evidence suggests a direct inhibitory effect at gonadal sites and a binding of Danazol to receptors of gonadal steroids at target organs. In addition, Danazol has been shown to significantly decrease IgG, IgM and IgA levels, as well as phospholipid and IgG isotope autoantibodies in patients with endometriosis and associated elevations of autoantibodies, suggesting this could be another mechanism by which it facilitates regression of the disease.


In the treatment of endometriosis, Danazol alters the normal and ectopic endometrial tissue so that it becomes inactive and atrophic. Complete resolution of endometrial lesions occurs in the majority of cases.


Changes in vaginal cytology and cervical mucus reflect the suppressive effect of Danazol on the pituitary-ovarian axis.


In the treatment of fibrocystic breast disease, Danazol usually produces partial to complete disappearance of nodularity and complete relief of pain and tenderness. Changes in the menstrual pattern may occur.


Generally, the pituitary-suppressive action of Danazol is reversible. Ovulation and cyclic bleeding usually return within 60 to 90 days when therapy with Danazol is discontinued.


In the treatment of hereditary angioedema, Danazol at effective doses prevents attacks of the disease characterized by episodic edema of the abdominal viscera, extremities, face, and airway which may be disabling and, if the airway is involved, fatal. In addition, Danazol corrects partially or completely the primary biochemical abnormality of hereditary angioedema by increasing the levels of the deficient C1 esterase inhibitor (C1El). As a result of this action the serum levels of the C4 component of the complement system are also increased.



Pharmacokinetics


Absorption: After oral administration of a 400 mg dose to healthy male volunteers, peak plasma concentrations of Danazol are reached between 2 and 8 hours, with a median Tmax value of 4 hours. Steady state conditions are observed following 6 days of twice daily dosing of Danazol.


The pharmacokinetic parameters for Danazol after administering a 400 mg oral dose to healthy males are summarized in the following table:














ParametersMean ± SD (n=15)
Cmax (ng/mL)69.6 ± 29.9
Tmax (h)2.47 ± 1.62
AUC0-∞ (ng*h/mL)601 ± 181
t1/2 (h)9.70 ± 3.29
Total Body Clearance (L/h)727 ± 221

The pharmacokinetic parameters for Danazol after oral administration of 100, 200 and 400 mg single doses to healthy female volunteers are summarized in the following table:


































Dose (mg)

Mean Cmax ± SD

(ng/mL)


 Mean Tmax (h)

Mean AUC0-∞ ± SD

(ng*h/mL)


 FastingFedFastingFedFasting  Fed
10045.9 ±23.9113.8 ± 46.01-82-6 484 ± 263 741 ± 265
20063.8 ± 27.7159 ± 57.31-62-4681 ± 3631252 ± 307
400 60.4 ± 30.0253.7 ± 105.51-62-4754 ± 4431851 ± 605

Dose proportionality: Bioavailability studies indicate that blood levels do not increase proportionally with increases in the administered dose.


Single dose administration of Danazol in healthy female volunteers found that a 4-fold increase in dose produced only a 1.6 and 2.5-fold increase in AUC and a 1.3 and 2.2-fold increase in Cmax in the fasted and fed state, respectively. A similar degree of non-dose proportionality was observed at steady state.


Food Effect: Single dose administration of 100 mg and 200 mg capsules of Danazol to female volunteers showed that both the extent of availability and the maximum plasma concentration increased by 3 to 4 fold, respectively, following a meal (> 30 grams of fat), when compared to the fasted state. Further, food also delayed mean time to peak concentration of Danazol by about 30 minutes. Even after multiple dosing under less extreme food/fasting conditions, there remained approximately a 2 to 2.5 fold difference in bioavailability between the fed and fasted states.


Distribution: Danazol is lipophilic and can partition into cell membranes, indicating the likelihood of distribution into deep tissue compartments.


Metabolism and Excretion: Danazol appears to be metabolized and the metabolites are eliminated by renal and fecal pathways. The two primary metabolites excreted in the urine are 2-hydroxymethyl Danazol and ethisterone. At least ten different products were identified in feces.


The reported elimination half-life of Danazol is variable across studies. The mean half-life of Danazol in healthy males is 9.7 h. After 6 months of 200 mg three times a day dosing in endometriosis patients, the half-life of Danazol was reported as 23.7 hours.



Indications and Usage for Danazol


Endometriosis


Danazol capsules are indicated for the treatment of endometriosis amenable to hormonal management.


Fibrocystic Breast Disease


Most cases of symptomatic fibrocystic breast disease may be treated by simple measures (e.g., padded brassieres and analgesics).


In infrequent patients, symptoms of pain and tenderness may be severe enough to warrant treatment by suppression of ovarian function. Danazol capsules are usually effective in decreasing nodularity, pain, and tenderness. It should be stressed to the patient that this treatment is not innocuous in that it involves considerable alterations of hormone levels and that recurrence of symptoms is very common after cessation of therapy.


Hereditary Angioedema


Danazol capsules are indicated for the prevention of attacks of angioedema of all types (cutaneous, abdominal, laryngeal) in males and females.



Contraindications


Danazol capsules should not be administered to patients with:


  1. Undiagnosed abnormal genital bleeding.

  2. Markedly impaired hepatic, renal, or cardiac function.

  3. Pregnancy (see WARNINGS).

  4. Breast feeding.

  5. Porphyria - Danazol can induce ALA synthetase activity and hence porphyrin metabolism.

  6. Androgen-dependent tumor.

  7. Active thrombosis or thromboembolic disease and history of such events.

  8. Hypersensitivity to Danazol.


Warnings




Use of Danazol in pregnancy is contraindicated. A sensitive test (e.g., beta subunit test if available) capable of determining early pregnancy is recommended immediately prior to start of therapy. Additionally a non-hormonal method of contraception should be used during therapy. If a patient becomes pregnant while taking Danazol, administration of the drug should be discontinued and the patient should be apprised of the potential risk to the fetus. Exposure to Danazol in utero may result in androgenic effects on the female fetus; reports of clitoral hypertrophy, labial fusion, urogenital sinus defect, vaginal atresia, and ambiguous genitalia have been received. (See PRECAUTIONS: Pregnancy, Teratogenic Effects.)


Thromboembolism, thrombotic and thrombophlebitic events including sagittal sinus thrombosis and life-threatening or fatal strokes have been reported.


Experience with long-term therapy with Danazol is limited. Peliosis hepatis and benign hepatic adenoma have been observed with long-term use. Peliosis hepatis and hepatic adenoma may be silent until complicated by acute, potentially life-threatening intraabdominal hemorrhage. The physician therefore should be alert to this possibility. Attempts should be made to determine the lowest dose that will provide adequate protection. If the drug was begun at a time of exacerbation of hereditary angioneurotic edema due to trauma, stress or other cause, periodic attempts to decrease or withdraw therapy should be considered.


Danazol has been associated with several cases of benign intracranial hypertension also known as pseudotumor cerebri. Early signs and symptoms of benign intracranial hypertension include papilledema, headache, nausea and vomiting, and visual disturbances. Patients with these symptoms should be screened for papilledema and, if present, the patients should be advised to discontinue Danazol immediately and be referred to a neurologist for further diagnosis and care.




A temporary alteration of lipoproteins in the form of decreased high density lipoproteins and possibly increased low density lipoproteins has been reported during Danazol therapy. These alterations may be marked, and prescribers should consider the potential impact on the risk of atherosclerosis and coronary artery disease in accordance with the potential benefit of the therapy to the patient.


Before initiating therapy of fibrocystic breast disease with Danazol, carcinoma of the breast should be excluded. However, nodularity, pain, tenderness due to fibrocystic breast disease may prevent recognition of underlying carcinoma before treatment is begun. Therefore, if any nodule persists or enlarges during treatment, carcinoma should be considered and ruled out.


Patients should be watched closely for signs of androgenic effects some of which may not be reversible even when drug administration is stopped.


PrecautionsBecause Danazol may cause some degree of fluid retention, conditions that might be influenced by this factor, such as epilepsy, migraine, or cardiac or renal dysfunction, polycythemia and hypertension require careful observation. Use with caution in patients with diabetes mellitus.

Since hepatic dysfunction manifested by modest increases in serum transaminases levels has been reported in patients treated with Danazol, periodic liver function tests should be performed (see WARNINGS and ADVERSE REACTIONS).


Administration of Danazol has been reported to cause exacerbation of the manifestations of acute intermittent porphyria. (See CONTRAINDICATIONS.)


Laboratory monitoring of the hematologic state should be considered.



Drug Interactions


Prolongation of prothrombin time occurs in patients stabilized on warfarin.


Therapy with Danazol may cause an increase in carbamazepine levels in patients taking both drugs.


Danazol can cause insulin resistance. Caution should be exercised when used with antidiabetic drugs.


Danazol may raise the plasma levels of cyclosporin and tacrolimus, leading to an increase of the renal toxicity of these drugs. Monitoring of systemic concentrations of these drugs and appropriate dose adjustments may be needed when used concomitantly with Danazol.


Danazol can increase the calcemic response to synthetic vitamin D analogs in primary hypoparathyroidism.


The risk of myopathy and rhabdomyolysis is increased by concomitant administration of Danazol with statins such as simvastatin, atorvastatin and lovastatin. Caution should be exercised if used concomitantly. Consult the product labeling for statin drugs for specific information on dose restrictions in presence of Danazol.



Laboratory Tests


Danazol treatment may interfere with laboratory determinations of testosterone, androstenedione and dehydroepiandrosterone. Other metabolic events include a reduction in thyroid binding globulin and T4 with increased uptake of T3, but without disturbance of thyroid stimulating hormone or of free thyroxin index.



Carcinogenesis, Mutagenesis, Impairment of Fertility


Current data are insufficient to assess the carcinogenicity of Danazol.



Pregnancy


Teratogenic Effects

(See CONTRAINDICATIONS.)


Pregnancy Category X


Danazol administered orally to pregnant rats from the 6th through the 15th day of gestation at doses up to 250 mg/kg/day (7-15 times the human dose) did not result in drug-induced embryotoxicity or teratogenicity, nor difference in litter size, viability or weight of offspring compared to controls. In rabbits, the administration of Danazol on days 6-18 of gestation at doses of 60 mg/kg/day and above (2-4 times the human dose) resulted in inhibition of fetal development.



Nursing Mothers


(See CONTRAINDICATIONS).



Pediatric Use


Safety and effectiveness in pediatric patients have not been established.



Geriatric Use


Clinical studies of Danazol did not include sufficient numbers of subjects aged 65 and over to determine the safety and effectiveness of Danazol in elderly patients.



Adverse Reactions


The following events have been reported in association with the use of Danazol:


Androgen like effects include weight gain, acne and seborrhea. Mild hirsutism, edema, hair loss, voice change, which may take the form of hoarseness, sore throat or of instability or deepening of pitch, may occur and may persist after cessation of therapy. Hypertrophy of the clitoris is rare.


Other possible endocrine effects are menstrual disturbances including spotting, alteration of the timing of the cycle and amenorrhea. Although cyclical bleeding and ovulation usually return within 60-90 days after discontinuation of therapy with Danazol, persistent amenorrhea has occasionally been reported.


Flushing, sweating, vaginal dryness and irritation and reduction in breast size, may reflect lowering of estrogen. Nervousness and emotional lability have been reported. In the male a modest reduction in spermatogenesis may be evident during treatment. Abnormalities in semen volume, viscosity, sperm count, and motility may occur in patients receiving long-term therapy.


Hepatic dysfunction, as evidenced by reversible elevated serum enzymes and/or jaundice, has been reported in patients receiving a daily dosage of Danazol of 400 mg or more. It is recommended that patients receiving Danazol be monitored for hepatic dysfunction by laboratory tests and clinical observation. Serious hepatic toxicity including cholestatic jaundice, peliosis hepatis, and hepatic adenoma have been reported (see WARNINGS and PRECAUTIONS).


Abnormalities in laboratory tests may occur during therapy with Danazol including CPK, glucose tolerance, glucagon, thyroid binding globulin, sex hormone binding globulin, other plasma proteins, lipids and lipoproteins.


The following reactions have been reported, a causal relationship to the administration of Danazol has neither been confirmed nor refuted; allergic: urticaria, pruritus and rarely, nasal congestion; CNS effects: headache, nervousness and emotional lability, dizziness and fainting, depression, fatigue, sleep disorders, tremor, paresthesias, weakness, visual disturbances, and rarely, benign intracranial hypertension, anxiety, changes in appetite, chills, and rarely convulsions, Guillain-Barre syndrome; gastrointestinal: gastroenteritis, nausea, vomiting, constipation, and rarely, pancreatitis and splenic peliosis; musculoskeletal: muscle cramps or spasms, or pains, joint pain, joint lockup, joint swelling, pain in back, neck, or extremities, and rarely, carpal tunnel syndrome which may be secondary to fluid retention; genitourinary: hematuria, prolonged posttherapy amenorrhea; hematologic: an increase in red cell and platelet count. Reversible erythrocytosis, leukocytosis or polycythemia may be provoked. Eosinophilia, leukopenia and thrombocytopenia have also been noted. Skin: rashes (maculopapular, vesicular, papular, purpuric, petechial), and rarely, sun sensitivity, Stevens-Johnson syndrome and erythema multiforme; other: increased insulin requirements in diabetic patients, change in libido, myocardial infarction, palpitation, tachycardia, elevation in blood pressure,interstitial pneumonitis, and rarely, cataracts, bleeding gums, fever, pelvic pain, nipple discharge. Malignant liver tumors have been reported in rare instances, after long-term use.



Danazol Dosage and Administration


Endometriosis


In moderate to severe disease, or in patients infertile due to endometriosis, a starting dose of 800 mg given in two divided doses is recommended. Amenorrhea and rapid response to painful symptoms is best achieved at this dosage level. Gradual downward titration to a dose sufficient to maintain amenorrhea may be considered depending upon patient response. For mild cases, an initial daily dose of 200 mg to 400 mg given in two divided doses is recommended and may be adjusted depending on patient response. Therapy should begin during menstruation. Otherwise, appropriate tests should be performed to ensure that the patient is not pregnant while on therapy with Danazol (see CONTRAINDICATIONS and WARNINGS). It is essential that therapy continue uninterrupted for 3 to 6 months but may be extended to 9 months if necessary. After termination of therapy, if symptoms recur, treatment can be reinstituted.


Fibrocystic Breast Disease


The total daily dosage of Danazol for fibrocystic breast disease ranges from 100 mg to 400 mg given in two divided doses depending upon patient response. Therapy should begin during menstruation. Otherwise, appropriate tests should be performed to ensure that the patient is not pregnant while on therapy with Danazol. A nonhormonal method of contraception is recommended when Danazol is administered at this dose, since ovulation may not be suppressed.


In most instances, breast pain and tenderness are significantly relieved by the first month and eliminated in 2 to 3 months. Usually elimination of nodularity requires 4 to 6 months of uninterrupted therapy. Regular menstrual patterns, irregular menstrual patterns, and amenorrhea each occur in approximately one-third of patients treated with 100 mg of Danazol. Irregular menstrual patterns and amenorrhea are observed more frequently with higher doses. Clinical studies have demonstrated that 50% of patients may show evidence of recurrence of symptoms within one year. In this event, treatment may be reinstated.


Hereditary Angioedema


The dosage requirements for continuous treatment of hereditary angioedema with Danazol should be individualized on the basis of the clinical response of the patient. It is recommended that the patient be started on 200 mg, two or three times a day. After a favorable initial response is obtained in terms of prevention of episodes of edematous attacks, the proper continuing dosage should be determined by decreasing the dosage by 50% or less at intervals of one to three months or longer if frequency of attacks prior to treatment dictates. If an attack occurs, the daily dosage may be increased by up to 200 mg. During the dose adjusting phase, close monitoring of the patient's response is indicated, particularly if the patient has a history of airway involvement.



How is Danazol Supplied


Danazol Capsules USP, 50 mg are available as maize opaque/white opaque capsules imprinted with logo "LANNETT" on the cap and "1392" on the body and are supplied in:


Bottles of 100 (NDC 0527-1392-01)


Danazol Capsules USP, 100 mg are available as maize opaque/maize opaque capsules imprinted with logo "LANNETT" on the cap and "1368" on the body and are supplied in:


Bottles of 100 (NDC 0527-1368-01)


Danazol Capsules USP, 200 mg are available as orange opaque/orange opaque capsules imprinted with logo "LANNETT" on the cap and "1369" on the body and are supplied in:


Bottles of 60 (NDC 0527-1369-06)

Bottles of 100 (NDC 0527-1369-01)


Store at 20° to 25°C (68° to 77°F)[see USP Controlled Room Temperature].


Dispense in a well-closed container with a child-resistant closure as defined in the USP.


Manufactured by:

Lannett Company, Inc.

Philadelphia, PA 19136


Made in the USA


Revised 01/12; Revision 1


10-281



PRINCIPAL DISPLAY PANEL - 50 mg


NDC 0527-1392-01


Lannett


Danazol CAPSULES, USP


50 mg


Rx Only


100 CAPSULES




PRINCIPAL DISPLAY PANEL - 100 mg


NDC-0527-1368-01


Lannett


Danazol CAPSULES, USP


100 mg


Rx Only


100 CAPSULES




PRINCIPAL DISPLAY PANEL - 200 mg


NDC-0527-1369-01


Lannett


Danazol CAPSULES, USP


200 mg


Rx Only


100 CAPSULES










Danazol 
Danazol  capsule










Product Information
Product TypeHUMAN PRESCRIPTION DRUGNDC Product Code (Source)0527-1392
Route of AdministrationORALDEA Schedule    








Active Ingredient/Active Moiety
Ingredient NameBasis of StrengthStrength
Danazol (Danazol)Danazol50 mg










































Inactive Ingredients
Ingredient NameStrength
ANHYDROUS LACTOSE 
LACTOSE MONOHYDRATE 
MAGNESIUM STEARATE 
STARCH, CORN 
SODIUM LAURYL SULFATE 
TALC 
D&C YELLOW NO. 10 
FD&C RED NO. 40 
GELATIN 
TITANIUM DIOXIDE 
SHELLAC 
ALCOHOL 
FERROSOFERRIC OXIDE 
BUTYL ALCOHOL 
PROPYLENE GLYCOL 
METHYL ALCOHOL 
FD&C BLUE NO. 2 
FD&C BLUE NO. 1 
ALUMINUM OXIDE 


















Product Characteristics
ColorYELLOW (maize opaque cap) , WHITE (white opaque body)Scoreno score
ShapeCAPSULESize16mm
FlavorImprint CodeLANNETT;1392
Contains      










Packaging
#NDCPackage DescriptionMultilevel Packaging
10527-1392-01100 CAPSULE In 1 BOTTLENone










Marketing Information
Marketing CategoryApplication Number or Monograph CitationMarketing Start DateMarketing End Date
ANDAANDA07821404/19/2007







Danazol 
Danazol  capsule










Product Information
Product TypeHUMAN PRESCRIPTION DRUGNDC Product Code (Source)0527-1368
Route of AdministrationORALDEA Schedule    








Active Ingredient/Active Moiety
Ingredient NameBasis of StrengthStrength
Danazol (Danazol)Danazol100 mg










































Inactive Ingredients
Ingredient NameStrength
ANHYDROUS LACTOSE 
LACTOSE MONOHYDRATE 
MAGNESIUM STEARATE 
STARCH, CORN 
SODIUM LAURYL SULFATE 
TALC 
D&C YELLOW NO. 10 
FD&C RED NO. 40 
GELATIN 
TITANIUM DIOXIDE 
SHELLAC 
ALCOHOL 
FERROSOFERRIC OXIDE 
BUTYL ALCOHOL 
PROPYLENE GLYCOL 
METHYL ALCOHOL 
FD&C BLUE NO. 2 
FD&C BLUE NO. 1 
ALUMINUM OXIDE 


















Product Characteristics
ColorYELLOW (maize opaque cap and body)Scoreno score
ShapeCAPSULESize16mm
FlavorImprint CodeLANNETT;1368
Contains      










Packaging
#NDCPackage DescriptionMultilevel Packaging
10527-1368-01100 CAPSULE In 1 BOTTLENone










Marketing Information
Marketing CategoryApplication Number or Monograph CitationMarketing Start DateMarketing End Date
ANDAANDA07821404/19/2007







Danazol 
Danazol  capsule










Product Information
Product TypeHUMAN PRESCRIPTION DRUGNDC Product Code (Source)0527-1369
Route of AdministrationORALDEA Schedule    








Active Ingredient/Active Moiety
Ingredient NameBasis of StrengthStrength
Danazol (Danazol)Danazol200 mg












































Inactive Ingredients
Ingredient NameStrength
ANHYDROUS LACTOSE 
LACTOSE MONOHYDRATE 
MAGNESIUM STEARATE 
STARCH, CORN 
SODIUM LAURYL SULFATE 
TALC 
D&C YELLOW NO. 10 
FD&C RED NO. 40 
D&C RED NO. 28 
GELATIN 
TITANIUM DIOXIDE 
SHELLAC 
ALCOHOL 
FERROSOFERRIC OXIDE 
BUTYL ALCOHOL 
PROPYLENE GLYCOL 
METHYL ALCOHOL 
FD&C BLUE NO. 2 
FD&C BLUE NO. 1 
ALUMINUM OXIDE 


















Product Characteristics
ColorORANGE (orange opaque cap and body)Scoreno score
ShapeCAPSULESize19mm
FlavorImprint CodeLANNETT;1369
Contains      














Packaging
#NDCPackage DescriptionMultilevel Packaging
10527-1369-0660 CAPSULE In 1 BOTTLENone
20527-1369-01100 CAPSULE In 1 BOTTLENone










Marketing Information
Marketing CategoryApplication Number or Monograph CitationMarketing Start DateMarketing End Date
ANDAANDA07724609/28/2005


Labeler - Lannett Company, Inc. (002277481)









Establishment
NameAddressID/FEIOperations
Firmplace Corporation Yerevan Branch683520909ANALYSIS, ANALYSIS, ANALYSIS









Establishment
NameAddressID/FEIOperations
Lannett Company, Inc.002277481MANUFACTURE, MANUFACTURE, MANUFACTURE









Establishment
NameAddressID/FEIOperations
Lannett Company, Inc.829757603ANALYSIS, ANALYSIS, ANALYSIS, LABEL, LABEL, LABEL, MANUFACTURE, MANUFACTURE, MANUFACTURE, PACK, PACK, PACK
Revised: 01/2012Lannett Company, Inc.

Darvon


Generic Name: propoxyphene (Oral route)

proe-POX-i-feen

Oral route(Capsule)

Do not prescribe propoxyphene for patients who are suicidal or addiction-prone. Prescribe propoxyphene with caution for patients taking tranquilizers or antidepressant drugs, and patients who use alcohol in excess. Patients should not exceed the recommended dose and alcohol intake should be limited. Propoxyphene products in excessive doses, either alone or in combination with other CNS depressants, including alcohol, are a major cause of drug-related deaths .


Oral route(Tablet)

Do not prescribe propoxyphene for patients who are suicidal or addiction-prone. Prescribe propoxyphene with caution for patients taking tranquilizers or antidepressant drugs, and patients who use alcohol in excess. Patients should not exceed the recommended dose and alcohol intake should be limited. Propoxyphene products in excessive doses, either alone or in combination with other CNS depressants, including alcohol, are a major cause of drug-related deaths .



Commonly used brand name(s)

In the U.S.


  • Darvon

  • Darvon-N

  • Pp-Cap

Available Dosage Forms:


  • Capsule

  • Tablet

  • Suspension

Therapeutic Class: Analgesic


Chemical Class: Opioid


Uses For Darvon


Propoxyphene is used to relieve mild to moderate pain. It belongs to the group of medicines called narcotic analgesics (pain medicines). It acts on the central nervous system (CNS) to relieve pain.


When propoxyphene is used for a long time, it may become habit-forming, causing mental or physical dependence. However, people who have continuing pain should not let the fear of dependence keep them from using narcotics to relieve their pain. Mental dependence (addiction) is not likely to occur when narcotics are used for this purpose. Physical dependence may lead to withdrawal side effects if treatment is stopped suddenly. However, severe withdrawal side effects can usually be prevented by gradually reducing the dose over a period of time before treatment is stopped completely.


Products containing propoxyphene were withdrawn from the U.S. market starting November 19, 2010.


This medicine was available only with your doctor's prescription.


Before Using Darvon


In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:


Allergies


Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.


Pediatric


Appropriate studies have not been performed on the relationship of age to the effects of propoxyphene in the pediatric population. Safety and efficacy have not been established.


Geriatric


Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of propoxyphene in the elderly. However, elderly patients are more likely to have age-related liver, kidney, or heart problems which may require caution and an adjustment in the dose for patients receiving propoxyphene.


Breast Feeding


Studies in women suggest that this medication poses minimal risk to the infant when used during breastfeeding.


Interactions with Medicines


Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.


Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.


  • Naltrexone

  • Rasagiline

  • Selegiline

Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.


  • Adinazolam

  • Alfentanil

  • Alprazolam

  • Amobarbital

  • Anileridine

  • Aprobarbital

  • Bromazepam

  • Brotizolam

  • Buprenorphine

  • Butabarbital

  • Butalbital

  • Butorphanol

  • Carbamazepine

  • Carisoprodol

  • Chloral Hydrate

  • Chlordiazepoxide

  • Chlorzoxazone

  • Clobazam

  • Clonazepam

  • Clorazepate

  • Codeine

  • Dantrolene

  • Dezocine

  • Diazepam

  • Estazolam

  • Ethchlorvynol

  • Fentanyl

  • Flunitrazepam

  • Flurazepam

  • Fospropofol

  • Halazepam

  • Hydrocodone

  • Hydromorphone

  • Ketazolam

  • Levorphanol

  • Lorazepam

  • Lormetazepam

  • Medazepam

  • Meperidine

  • Mephenesin

  • Mephobarbital

  • Meprobamate

  • Metaxalone

  • Methocarbamol

  • Methohexital

  • Midazolam

  • Morphine

  • Morphine Sulfate Liposome

  • Nalbuphine

  • Nitrazepam

  • Nordazepam

  • Opium

  • Oxazepam

  • Oxycodone

  • Oxymorphone

  • Pentazocine

  • Pentobarbital

  • Phenobarbital

  • Prazepam

  • Propoxyphene

  • Quazepam

  • Remifentanil

  • Secobarbital

  • Sodium Oxybate

  • Sufentanil

  • Tapentadol

  • Temazepam

  • Thiopental

  • Triazolam

Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.


  • Doxepin

  • Metoprolol

  • Propranolol

  • Warfarin

Interactions with Food/Tobacco/Alcohol


Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.


Other Medical Problems


The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:


  • Alcohol abuse, history of or

  • Breathing problems (e.g., chronic obstructive pulmonary disease [COPD], cor pulmonale, hypoxia) or

  • Drug dependence, especially narcotic abuse or dependence, or history of—Use with caution. May increase risk for more serious side effects.

  • Brain tumor or

  • Head injuries or

  • Increased pressure in the head—Some of the side effects of propoxyphene can cause serious problems in people who have these medical problems.

  • Breathing problems (e.g., asthma, hypercapnia), severe or

  • Emotional problems or

  • Paralytic ileus (intestinal blockage) or

  • Respiratory depression (hypoventilation or slow breathing) or

  • Suicidal ideation (thoughts of hurting or killing oneself), or history of—Should not be used in patients with these conditions.

  • Hypotension (low blood pressure) or

  • Pancreatitis (inflammation of the pancreas)—Use with caution. May make these conditions worse.

  • Kidney disease or

  • Liver disease—Use with caution. The effects may be increased because of slower removal of the medicine from the body.

Proper Use of propoxyphene

This section provides information on the proper use of a number of products that contain propoxyphene. It may not be specific to Darvon. Please read with care.


Take this medicine only as directed by your doctor. Do not take more of it, do not take it more often, and do not take it for a longer time than your doctor ordered. This is especially important for elderly patients, who may be more sensitive to the effects of pain medicines. If too much of this medicine is taken for a long time, it may become habit-forming (causing mental or physical dependence).


This medicine should come with a Medication Guide. Read and follow these instructions carefully. Ask your doctor if you have any questions.


Dosing


The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.


The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.


  • For oral dosage forms (capsules or tablets):
    • For mild to moderate pain:
      • Adults—One capsule or tablet every 4 hours as needed. However, the dose is usually not more than 6 capsules or tablets per day.

      • Children—Use and dose must be determined by your doctor.



Missed Dose


If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.


Storage


Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.


Keep out of the reach of children.


Do not keep outdated medicine or medicine no longer needed.


Ask your healthcare professional how you should dispose of any medicine you do not use.


Throw any unused medicine by mixing it with used coffee grounds or kitty litter and place it in a sealable bag, empty can, or container.


Precautions While Using Darvon


It is very important that your doctor check your progress while you are taking this medicine. This will allow your doctor to see if the medicine is working properly and to decide if you should continue to take it.


Talk to your doctor first before you stop taking this medicine and changing to another pain medicine.


This medicine can cause changes in heart rhythms, such as conditions called PR, QRS, and QT prolongation. It may change the way your heart beats and cause fainting, dizziness, lightheadedness, or serious side effects in some patients. Contact your doctor right away if you have any symptoms of heart rhythm problems, such as fast, pounding, or irregular heartbeats.


This medicine will add to the effects of alcohol and other CNS depressants (medicines that can make you drowsy or less alert). Some examples of CNS depressants are antihistamines or medicine for allergies or colds; sedatives, tranquilizers, or sleeping medicine; other prescription pain medicine or narcotics; medicine for seizures or barbiturates; muscle relaxants; or anesthetics, including some dental anesthetics. Check with your doctor before taking any of the other medicines listed above while you are using this medicine.


This medicine may be habit-forming. If you feel that the medicine is not working as well, do not use more than your prescribed dose.


Dizziness, lightheadedness, or fainting may occur when you get up suddenly from a lying or sitting position. Getting up slowly may help lessen this problem. Also, lying down for a while may relieve dizziness or lightheadedness.


This medicine may make you dizzy, drowsy, or lightheaded. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are dizzy or not alert.


Using narcotics for a long time can cause severe constipation. To prevent this, your doctor may direct you to take laxatives, drink a lot of fluids, or increase the amount of fiber in your diet. Be sure to follow the directions carefully, because continuing constipation can lead to more serious problems.


Do not change your dose or suddenly stop using this medicine without first checking with your doctor. Your doctor may want you to gradually reduce the amount you are using before stopping it completely. This may help prevent worsening of your condition and reduce the possibility of withdrawal symptoms, such as abdominal or stomach cramps, anxiety, fever, nausea, runny nose, sweating, tremors, or trouble with sleeping.


Using this medicine while you are pregnant may cause neonatal withdrawal syndrome in your newborn babies. Tell your doctor right away if your child has the following symptoms: abnormal sleep pattern, diarrhea, high-pitched cry, irritability, shakiness or tremor, weight loss, vomiting, or failure to gain weight.


Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.


Darvon Side Effects


Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.


Check with your doctor immediately if any of the following side effects occur:


Rare
  • Abdominal or stomach pain

  • chills

  • clay-colored stools

  • dark urine

  • dizziness

  • fever

  • headache

  • itching

  • loss of appetite

  • nausea

  • rash

  • unpleasant breath odor

  • unusual tiredness or weakness

  • vomiting of blood

  • yellow eyes or skin

Incidence not known
  • Bloating

  • bloody or black, tarry stools

  • bloody or cloudy urine

  • change in consciousness

  • chest pain or discomfort

  • confusion

  • constipation

  • darkened urine

  • decreased urine output

  • difficult or troubled breathing

  • dilated neck veins

  • drowsiness

  • extreme fatigue

  • fainting

  • fast, slow, pounding, or irregular heartbeat or pulse

  • fever with or without chills

  • hives

  • hoarseness

  • indigestion

  • irregular, fast or slow, or shallow breathing

  • irritation

  • itching

  • joint pain, stiffness, or swelling

  • light-colored stools

  • loss of consciousness

  • muscle tremors

  • no blood pressure or pulse

  • no breathing

  • pain or discomfort in the arms, jaw, back, or neck

  • pains in the stomach, side, or abdomen, possibly radiating to the back

  • pale or blue lips, fingernails, or skin

  • rapid, deep breathing

  • redness of the skin

  • restlessness

  • right upper abdominal or stomach pain and fullness

  • severe stomach pain

  • shakiness and unsteady walk

  • shortness of breath

  • stomach cramps

  • stopping of the heart

  • sudden decrease in the amount of urine

  • swelling of the eyelids, face, fingers, lips, hands, lower legs, or feet

  • thoughts of suicide

  • tightness in the chest

  • troubled breathing or swallowing

  • unconsciousness

  • unsteadiness, trembling, or other problems with muscle control or coordination

  • vomiting of blood or material that looks like coffee grounds

  • weight gain

  • wheezing

Get emergency help immediately if any of the following symptoms of overdose occur:


Symptoms of overdose
  • Bluish color of the fingernails, lips, skin, palms, or nail beds

  • convulsion

  • coughing that sometimes produces a pink frothy sputum

  • decreased awareness or responsiveness

  • difficult, fast, or noisy breathing, sometimes with wheezing

  • dilated pupils

  • muscle tremors

  • pale skin

  • pounding or rapid pulse

  • rapid, deep breathing

  • severe sleepiness

  • sleepiness or unusual drowsiness

  • slow to respond

  • slurred speech

  • weight loss

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:


More common
  • Relaxed and calm

Incidence not known
  • Abnormal behavior

  • blurred or loss of vision

  • diarrhea

  • disturbed color perception

  • double vision

  • false or unusual sense of well-being

  • halos around lights

  • mental depression or anxiety

  • muscular pain, tenderness, wasting, or weakness

  • night blindness

  • nightmares or unusually vivid dreams

  • overbright appearance of lights

  • seeing, hearing, or feeling things that are not there

  • swelling of the eye

  • tunnel vision

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.


Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

See also: Darvon side effects (in more detail)



The information contained in the Thomson Reuters Micromedex products as delivered by Drugs.com is intended as an educational aid only. It is not intended as medical advice for individual conditions or treatment. It is not a substitute for a medical exam, nor does it replace the need for services provided by medical professionals. Talk to your doctor, nurse or pharmacist before taking any prescription or over the counter drugs (including any herbal medicines or supplements) or following any treatment or regimen. Only your doctor, nurse, or pharmacist can provide you with advice on what is safe and effective for you.


The use of the Thomson Reuters Healthcare products is at your sole risk. These products are provided "AS IS" and "as available" for use, without warranties of any kind, either express or implied. Thomson Reuters Healthcare and Drugs.com make no representation or warranty as to the accuracy, reliability, timeliness, usefulness or completeness of any of the information contained in the products. Additionally, THOMSON REUTERS HEALTHCARE MAKES NO REPRESENTATION OR WARRANTIES AS TO THE OPINIONS OR OTHER SERVICE OR DATA YOU MAY ACCESS, DOWNLOAD OR USE AS A RESULT OF USE OF THE THOMSON REUTERS HEALTHCARE PRODUCTS. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE OR USE ARE HEREBY EXCLUDED. Thomson Reuters Healthcare does not assume any responsibility or risk for your use of the Thomson Reuters Healthcare products.


More Darvon resources


  • Darvon Side Effects (in more detail)
  • Darvon Use in Pregnancy & Breastfeeding
  • Drug Images
  • Darvon Drug Interactions
  • Darvon Support Group
  • 3 Reviews for Darvon - Add your own review/rating


  • Darvon Prescribing Information (FDA)

  • Darvon MedFacts Consumer Leaflet (Wolters Kluwer)

  • Darvon Concise Consumer Information (Cerner Multum)

  • Propoxyphene Professional Patient Advice (Wolters Kluwer)

  • Darvon-N Prescribing Information (FDA)

  • Propoxyphene Hydrochloride Monograph (AHFS DI)



Compare Darvon with other medications


  • Pain

dantrolene


DAN-troe-leen


Oral route(Capsule)

Dantrolene has a potential for hepatotoxicity and symptomatic hepatitis (fatal and non-fatal) has been reported at various dose levels of the drug. Risk of hepatic injury appears to be greater in patients taking a higher dosage (800 mg or more per day), in females, in patients over 35 years of age, and in patients taking other medication(s) in addition to dantrolene. Monitor hepatic function including frequent determination of SGOT or SGPT during therapy. Discontinue therapy after 45 days if no observable benefit is derived from therapy .



Commonly used brand name(s)

In the U.S.


  • Dantrium

Available Dosage Forms:


  • Capsule

Therapeutic Class: Skeletal Muscle Relaxant, Direct Acting


Uses For dantrolene


Dantrolene is used to help relax certain muscles in your body. It relieves the spasms, cramping, and tightness of muscles caused by certain medical problems such as multiple sclerosis (MS), cerebral palsy, stroke, or injury to the spine. Dantrolene does not cure these problems, but it may allow other treatment, such as physical therapy, to be more helpful in improving your condition. Dantrolene acts directly on the muscles to produce its relaxant effects.


Dantrolene is also used to prevent or treat a medical problem called malignant hyperthermia that may occur in some patients during or following surgery or anesthesia. Malignant hyperthermia consists of a group of symptoms including very high fever, fast and irregular heartbeat, and breathing problems. It is believed that the tendency to develop malignant hyperthermia is inherited.


dantrolene is available only with your doctor's prescription.


Before Using dantrolene


In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For dantrolene, the following should be considered:


Allergies


Tell your doctor if you have ever had any unusual or allergic reaction to dantrolene or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.


Pediatric


Appropriate studies have not been performed on the relationship of age to the effects of dantrolene in children below 5 years of age. Safety and efficacy have not been established.


Geriatric


No information is available on the relationship of age to the effects of dantrolene in geriatric patients.


Pregnancy








Pregnancy CategoryExplanation
All TrimestersCAnimal studies have shown an adverse effect and there are no adequate studies in pregnant women OR no animal studies have been conducted and there are no adequate studies in pregnant women.

Breast Feeding


There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.


Interactions with Medicines


Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking dantrolene, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.


Using dantrolene with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.


  • Adinazolam

  • Alfentanil

  • Alprazolam

  • Amlodipine

  • Amobarbital

  • Anileridine

  • Aprobarbital

  • Bromazepam

  • Brotizolam

  • Butabarbital

  • Butalbital

  • Carisoprodol

  • Chloral Hydrate

  • Chlordiazepoxide

  • Chlorzoxazone

  • Clobazam

  • Clonazepam

  • Clorazepate

  • Codeine

  • Dantrolene

  • Diazepam

  • Diltiazem

  • Estazolam

  • Ethchlorvynol

  • Felodipine

  • Fentanyl

  • Flunitrazepam

  • Flurazepam

  • Halazepam

  • Hydrocodone

  • Hydromorphone

  • Isradipine

  • Ketazolam

  • Levorphanol

  • Lorazepam

  • Lormetazepam

  • Medazepam

  • Meperidine

  • Mephenesin

  • Mephobarbital

  • Meprobamate

  • Metaxalone

  • Methocarbamol

  • Methohexital

  • Methotrexate

  • Midazolam

  • Morphine

  • Morphine Sulfate Liposome

  • Nicardipine

  • Nifedipine

  • Nisoldipine

  • Nitrazepam

  • Nordazepam

  • Oxazepam

  • Oxycodone

  • Oxymorphone

  • Pentobarbital

  • Phenobarbital

  • Prazepam

  • Primidone

  • Propoxyphene

  • Quazepam

  • Remifentanil

  • Secobarbital

  • Sodium Oxybate

  • Sufentanil

  • Temazepam

  • Thiopental

  • Triazolam

  • Verapamil

Interactions with Food/Tobacco/Alcohol


Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.


Other Medical Problems


The presence of other medical problems may affect the use of dantrolene. Make sure you tell your doctor if you have any other medical problems, especially:


  • Heart disease or

  • Liver disease, history of or

  • Lung disease (e.g., emphysema, asthma, bronchitis)—The chance of serious side effects may be increased.

  • Liver disease, active (e.g., hepatitis, cirrhosis) or

  • Muscle spasms caused by rheumatic disorders—Should not be used in patients with these conditions.

Proper Use of dantrolene


Dantrolene may be taken with or without food or on a full or empty stomach. However, if your doctor tells you to take the medicine a certain way, take it exactly as directed.


Take dantrolene only as directed by your doctor. Do not take more of it and do not take it more often than your doctor ordered.


Dosing


The dose of dantrolene will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of dantrolene. If your dose is different, do not change it unless your doctor tells you to do so.


The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.


  • For oral dosage form (capsules):
    • For prevention or treatment of malignant hyperthermia:
      • Adults—Dose is based on body weight and must be determined by your doctor. The usual dose is 4 to 8 milligrams (mg) per kilogram (kg) of body weight each day, and is divided in 3 or 4 doses. Your doctor will tell you exactly when and how often to take your medicine.

      • Children—Use and dose must be determined by your doctor.


    • To relieve muscle spasms:
      • Adults—At first, 25 milligrams (mg) once a day. Your doctor may adjust your dose as needed. However, the dose is usually not more than 100 mg four times a day.

      • Children—Dose is based on body weight and must be determined by your doctor. At first, 0.5 milligram (mg) per kilogram (kg) of body weight twice a day. Your doctor may adjust the dose as needed. However, the dose is usually not more than 3 mg per kg four times a day or 100 mg four times a day.



Missed Dose


If you miss a dose of dantrolene, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.


Storage


Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.


Keep out of the reach of children.


Do not keep outdated medicine or medicine no longer needed.


Ask your healthcare professional how you should dispose of any medicine you do not use.


Precautions While Using dantrolene


If you will be taking dantrolene for a long time (e.g., several months at a time), your doctor should check your progress at regular visits. Blood tests will be needed to check for unwanted effects.


dantrolene will add to the effects of alcohol and other CNS depressants (medicines that slow down the nervous system, possibly causing drowsiness). Some examples of CNS depressants are antihistamines or medicine for hay fever, other allergies, or colds; sedatives, tranquilizers, or sleeping medicine; prescription pain medicine or narcotics; barbiturates; medicine for seizures; other muscle relaxants; or anesthetics, including some dental anesthetics. Therefore, do not drink alcoholic beverages, and check with your doctor before taking any of the medicines listed above, while you are using dantrolene.


dantrolene may cause drowsiness, dizziness or lightheadedness, vision problems, or muscle weakness in some people. Make sure you know how you react to dantrolene before you drive, use machines, or do anything else that could be dangerous if you are dizzy or are not alert, well-coordinated, and able to see well.


dantrolene may make your skin more sensitive to sunlight. Use a sunscreen when you are outdoors. Avoid sunlamps and tanning beds.


dantrolene Side Effects


Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Serious side effects are very rare when dantrolene is taken for a short time, for example, when it is used for a few days before, during, or after surgery or anesthesia to prevent or treat malignant hyperthermia. However, serious side effects may occur, especially when the medicine is taken for a long time.


Check with your doctor immediately if any of the following side effects occur:


Less common
  • Bloody or black, tarry stools

  • bloody or dark urine

  • bluish color changes in skin color

  • changes in speech

  • chest pain

  • confusion

  • constipation

  • convulsions (seizures)

  • decrease in frequency of urination

  • decrease in urine volume

  • difficult urination

  • difficulty in moving

  • difficulty in passing urine (dribbling)

  • difficulty in swallowing

  • fast, pounding, or irregular heartbeat or pulse

  • increased frequency of urination

  • increased urge to urinate during the night

  • joint pain

  • light-colored stools

  • lightheadedness

  • loss of bladder control

  • mental depression

  • muscle aching or cramping

  • muscle pains or stiffness

  • muscle spasm or jerking of all extremities

  • nausea and vomiting

  • pain in lower back

  • pain or burning while urinating

  • pain, tenderness, or changes in skin color

  • painful urination

  • severe stomach pain

  • shortness of breath

  • skin rash, hives, or itching

  • slow or troubled breathing

  • sudden decrease in amount of urine

  • sudden loss of consciousness

  • swelling of foot or leg

  • swollen joints

  • unusual tiredness or weakness

  • upper right abdominal pain

  • vomiting of blood or material that looks like coffee grounds

  • waking to urinate at night

  • yellow eyes or skin

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:


More common
  • Diarrhea

  • dizziness

  • drowsiness

  • general feeling of discomfort or illness

  • muscle weakness

Less common
  • Abdominal or stomach cramps or discomfort

  • abnormal hair growth

  • acne-like rash

  • blurred or double vision or any change in vision

  • change in taste

  • chills and fever

  • disturbed color perception

  • excessive tearing

  • halos around lights

  • headache

  • itching skin

  • loss of appetite

  • night blindness

  • overbright appearance of lights

  • redness of skin

  • seeing double

  • skin rash, encrusted, scaly and oozing

  • sleeplessness

  • slurring of speech or other speech problems

  • sudden decrease in amount of urine

  • sweating

  • trouble in sleeping

  • tunnel vision

  • unable to sleep

  • unusual nervousness

  • weight loss

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.


Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

See also: dantrolene side effects (in more detail)



The information contained in the Thomson Reuters Micromedex products as delivered by Drugs.com is intended as an educational aid only. It is not intended as medical advice for individual conditions or treatment. It is not a substitute for a medical exam, nor does it replace the need for services provided by medical professionals. Talk to your doctor, nurse or pharmacist before taking any prescription or over the counter drugs (including any herbal medicines or supplements) or following any treatment or regimen. Only your doctor, nurse, or pharmacist can provide you with advice on what is safe and effective for you.


The use of the Thomson Reuters Healthcare products is at your sole risk. These products are provided "AS IS" and "as available" for use, without warranties of any kind, either express or implied. Thomson Reuters Healthcare and Drugs.com make no representation or warranty as to the accuracy, reliability, timeliness, usefulness or completeness of any of the information contained in the products. Additionally, THOMSON REUTERS HEALTHCARE MAKES NO REPRESENTATION OR WARRANTIES AS TO THE OPINIONS OR OTHER SERVICE OR DATA YOU MAY ACCESS, DOWNLOAD OR USE AS A RESULT OF USE OF THE THOMSON REUTERS HEALTHCARE PRODUCTS. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE OR USE ARE HEREBY EXCLUDED. Thomson Reuters Healthcare does not assume any responsibility or risk for your use of the Thomson Reuters Healthcare products.


More dantrolene resources


  • Dantrolene Side Effects (in more detail)
  • Dantrolene Dosage
  • Dantrolene Use in Pregnancy & Breastfeeding
  • Drug Images
  • Dantrolene Drug Interactions
  • Dantrolene Support Group
  • 3 Reviews for Dantrolene - Add your own review/rating


  • dantrolene Concise Consumer Information (Cerner Multum)

  • Dantrolene MedFacts Consumer Leaflet (Wolters Kluwer)

  • Dantrolene Prescribing Information (FDA)

  • Dantrium Prescribing Information (FDA)

  • Dantrium Monograph (AHFS DI)

  • Dantrium Intravenous Prescribing Information (FDA)



Compare dantrolene with other medications


  • Malignant Hyperthermia
  • Spasticity