Wednesday, September 28, 2016

Iodopengha




Iodopengha may be available in the countries listed below.


Ingredient matches for Iodopengha



Eugenol

Eugenol is reported as an ingredient of Iodopengha in the following countries:


  • France

Lidocaine

Lidocaine is reported as an ingredient of Iodopengha in the following countries:


  • France

International Drug Name Search

Acide ascorbique




Acide ascorbique may be available in the countries listed below.


Ingredient matches for Acide ascorbique



Ascorbic Acid

Acide ascorbique (DCF) is known as Ascorbic Acid in the US.

International Drug Name Search

Glossary

DCFDénomination Commune Française

Click for further information on drug naming conventions and International Nonproprietary Names.

Ovace Foam


Pronunciation: sul-fa-SEE-ta-mide
Generic Name: Sulfacetamide
Brand Name: Ovace


Ovace Foam is used for:

Treating bacterial infections of the skin, including dandruff. It may also be used for other conditions as determined by your doctor.


Ovace Foam is a sulfonamide. It works by restricting the production of folic acid, which bacteria need for growth. This kills the bacteria.


Do NOT use Ovace Foam if:


  • you are allergic to any ingredient in Ovace Foam

  • you have had a severe allergic reaction (eg, severe rash, hives, difficulty breathing, dizziness) to any other sulfonamide medicine, such as acetazolamide, celecoxib, certain diuretics (eg, hydrochlorothiazide), glyburide, probenecid, sulfamethoxazole, valdecoxib, or zonisamide

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



Before using Ovace Foam:


Some medical conditions may interact with Ovace Foam. Tell your doctor or pharmacist 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

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


  • Silver-containing products (eg, silver sulfadiazine) because they may decrease Ovace Foam's effectiveness

  • Methenamine because it may increase the risk of Ovace Foam's side effects

This may not be a complete list of all interactions that may occur. Ask your health care provider if Ovace Foam 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 Ovace Foam:


Use Ovace Foam as directed by your doctor. Check the label on the medicine for exact dosing instructions.


  • Ovace Foam is for use on the skin only.

  • Shake well before each use.

  • Wash your hands before and after using Ovace Foam.

  • Remove the clear cap from the can. Turn the can upside down and dispense a small amount of medicine (enough to cover the affected area) into your hand. Gently massage into the affected area until the foam disappears.

  • If you are applying Ovace Foam to the scalp, your hair should be towel-dried or dry before applying.

  • Do not wash the treated area immediately after using Ovace Foam.

  • Hair styling products may be applied as usual after Ovace Foam has been applied.

  • To clear up your infection completely, use Ovace Foam for the full course of treatment. Keep using it even if you feel better in a few days.

  • Ovace Foam works best if it is used at the same time each day.

  • Continue to use Ovace Foam even if you feel well. Do not miss any doses.

  • If you miss a dose of Ovace Foam, use 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 use 2 doses at once.

Ask your health care provider any questions you may have about how to use Ovace Foam.



Important safety information:


  • Avoid getting Ovace Foam in your eyes, nose, or mouth.

  • Talk with your doctor before you use any other medicines or cleansers on your skin.

  • Do not apply Ovace Foam over large areas of the body or to open wounds or scraped, infected, or burned skin without first checking with your doctor.

  • Contact your doctor right away if stomach pain or cramps, severe diarrhea, or bloody stools occur. Do not treat diarrhea without first checking with your doctor.

  • Ovace Foam only works against bacteria; it does not treat viral infections.

  • Be sure to use Ovace Foam for the full course of treatment. If you do not, the medicine may not clear up your infection completely. The bacteria could also become less sensitive to this or other medicines. This could make the infection harder to treat in the future.

  • Long-term or repeated use of Ovace Foam may cause a second infection. Tell your doctor if signs of a second infection occur. Your medicine may need to be changed to treat this.

  • Large amounts of Ovace Foam may stain skin or white fabrics. This stain may be removed from fabric by ordinary laundering without bleach.

  • Ovace Foam is flammable. Do not store or use near an open flame or while smoking.

  • The contents of this can are under pressure. Do not puncture, burn, or break container, even if it appears to be empty.

  • Ovace Foam should be used with extreme caution in CHILDREN younger than 12 years old; safety and effectiveness in these children have not been confirmed.

  • PREGNANCY and BREAST-FEEDING: If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using Ovace Foam while you are pregnant. It is not known if Ovace Foam is found in breast milk after topical use. If you are or will be breast-feeding while you use Ovace Foam, check with your doctor. Discuss any possible risks to your baby.


Possible side effects of Ovace Foam:


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:



Mild irritation.



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

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); bloody diarrhea; fever; joint pain; red, swollen, or blistered skin; severe diarrhea; severe or persistent irritation; sores in the mouth; stomach cramps/pain.



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: Ovace 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. Ovace Foam may be harmful if swallowed. Symptoms of ingestion may include change in the amount of urine; nausea; vomiting.


Proper storage of Ovace Foam:

Store Ovace Foam at room temperature, between 68 and 77 degrees F (20 and 25 degrees C). Avoid temperatures above 104 degrees F (40 degrees C). Store away from heat and direct sunlight. Do not puncture, break, or burn the canister even if it appears to be empty. Store away from moisture and light. Do not freeze. Keep Ovace Foam out of the reach of children and away from pets.


General information:


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

  • Ovace Foam 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 Ovace Foam. 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 Ovace resources


  • Ovace Side Effects (in more detail)
  • Ovace Use in Pregnancy & Breastfeeding
  • Ovace Support Group
  • 0 Reviews for Ovace - Add your own review/rating


Compare Ovace with other medications


  • Seborrheic Dermatitis
  • Secondary Cutaneous Bacterial Infections

Tuesday, September 27, 2016

Boots Cold & Flu Relief Powders Lemon Flavour





1. Name Of The Medicinal Product



Abdine Cold Relief Powder



Bell's Hot Lemon Cold Relief Powders



Abdine Hot Lemon Cold Relief Powders



Cold & Flu Relief Powders Lemon Flavour



Cold Relief Powders Lemon Flavour


2. Qualitative And Quantitative Composition



Paracetamol BP 650 mg



3. Pharmaceutical Form



Powder for oral solution



4. Clinical Particulars



4.1 Therapeutic Indications



To give effective relief from the symptoms of cold and flu.



4.2 Posology And Method Of Administration



Adults, the elderly and children over 12 years: one sachet every four hours to a maximum of 4 sachets in any 24 hour period.



If symptoms persist for more than 3 days, consult your doctor.



4.3 Contraindications



Hypersensitivity to paracetamol or any of the other constituents.



4.4 Special Warnings And Precautions For Use



Care is advised in the administration of paracetamol to patients with severe renal or severe hepatic impairment. The hazard of overdose is greater in those with non-cirrhotic, alcoholic liver disease.



Do not exceed the recommended dose.



Patients should be advised not to take other paracetamol-containing products concurrently.



If symptoms persist, consult your doctor.



Keep out of the reach of children.



On the label:



'Do not take with any other paracetamol-containing products'.



'Immediate medical advice should be sought in the event of an overdose, even if you feel well.'



On the leaflet (or label if no leaflet exists):



'Immediate medical advice should be sought in the event of an overdose, even if you feel well, because of the risk of delayed, serious liver damage'.



4.5 Interaction With Other Medicinal Products And Other Forms Of Interaction



The speed of absorption of paracetamol may be increased by metoclopramide or domperidone and absorption reduced by cholestyramine.



The anticoagulant effect of warfarin and other coumarins may be enhanced by prolonged regular daily use of paracetamol with increased risk of bleeding; occasional doses have no significant effect.



4.6 Pregnancy And Lactation



Epidemiological studies in human pregnancy have shown no ill effects due to paracetamol used in the recommended dosage, but patients should follow the advice of their doctor regarding its use.



Paracetamol is excreted in breast milk but not in a clinically significant amount. Available published data do not contraindicate breast feeding.



4.7 Effects On Ability To Drive And Use Machines



None.



4.8 Undesirable Effects



Adverse effects of paracetamol are rare but hypersensitivity including skin rash may occur.



There have been a few reports of blood dyscrasias including thrombocytopenia and agranulocytosis but these were not necessarily causally related to paracetamol.



4.9 Overdose



Symptoms of paracetamol overdosage in the first 24 hours are pallor, nausea, vomiting, anorexia and abdominal pain. Liver damage may become apparent 12 to 48 hours after ingestion.



Abnormalities of glucose metabolism and metabolic acidosis may occur. In severe poisoning, hepatic failure may progress to encephalopathy, coma and death. Acute renal failure with acute tubular necrosis may develop even in the absence of severe liver damage. Cardiac arrhythmias and pancreatitis have been reported. Liver damage is possible in adults who have taken 10 g or more of paracetamol. It is considered that excess quantities of a toxic metabolite (usually adequately detoxified by glutathione when normal doses of paracetamol are ingested), become irreversibly bound to liver tissue.



Immediate treatment is essential in the management of paracetamol overdose. Despite a lack of significant early symptoms, patients should be referred to hospital urgently for immediate medical attention and any patient who has ingested around 7.5 g or more of paracetamol in the preceding 4 hours should undergo gastric lavage. Administration of oral methionine or intravenous N-acetylcysteine which may have a beneficial effect up to at least 48 hours after the overdose, may be required. General supportive measures must be available.



5. Pharmacological Properties



5.1 Pharmacodynamic Properties



This product is a mixture of active ingredients and excipients in powder form. When the contents of a sachet are passed through a disintegration unit (BP method) none of the granules are left on the wire mesh.



5.2 Pharmacokinetic Properties



Sources: Martindale, The Extra Pharmacopoeia, 29th Edition.



Paracetamol is readily absorbed from the gastro-intestinal tract with peak plasma concentrations occurring about 30 minutes to two hours after ingestion. It is metabolised in the liver and excreted in the urine mainly as the gluconoride and sulphate conjugates. Less than 5% is excreted as unchanged paracetamol.



5.3 Preclinical Safety Data



There are no preclinical data of relevance to the prescriber which are additional to that already included in other sections of the SPC.



6. Pharmaceutical Particulars



6.1 List Of Excipients



Ascorbic Acid, Sucrose, Sodium Citrate BP, Citric Acid BP, Tartaric Acid BP, Sodium Cyclamate, Spray Dried Lemon Juice, Lemon Aroma, Starch (modified, edible) and Natural



Colour E100.



6.2 Incompatibilities



None known.



6.3 Shelf Life



As packaged for sale: Three years



6.4 Special Precautions For Storage



Do not store above 25°C



6.5 Nature And Contents Of Container



A trifoil laminated sachet containing 5 g of powder.



Pack size: 5, 8 or 10 sachets per carton.



6.6 Special Precautions For Disposal And Other Handling



Empty the contents of one sachet into a tumbler and fill with hot water. Stir till dissolved.



7. Marketing Authorisation Holder



Bell Sons & Co (Druggists) Ltd



Gifford House



Slaidburn Crescent



Southport



Merseyside PR9 9AL



8. Marketing Authorisation Number(S)



PL 03105/0069



9. Date Of First Authorisation/Renewal Of The Authorisation



01 March 1999



10. Date Of Revision Of The Text



February 2010



11 DOSIMETRY


(IF APPLICABLE)



12 INSTRUCTIONS FOR PREPARATION OF RADIOPHARMACEUTICALS


(IF APPLICABLE)




Boots Rehydration Treatment





Boots Rehydration Treatment



Read all of this leaflet carefully because it contains important information for you.


This medicine is available without prescription to treat minor conditions. However, you still need to take it carefully to get the best results from it.


  • Keep this leaflet, you may need to read it again

  • Ask your pharmacist if you need more information or advice

  • You must contact a doctor if your symptoms worsen or do not improve after 24 to 48 hours




What this medicine is for


This medicine contains Glucose and various salts which belong to a group of medicines called oral electrolytes which act to replace lost fluids and salts.


It can be used to relieve short term (acute) diarrhoea and replace lost salts and fluids, in order to prevent dehydration.




Before you take this medicine


This medicine can be taken by adults and children over 1 year old. However, some people should not take this medicine or should seek the advice of their pharmacist or doctor first.


Do not give this medicine to infants under 1 year old, unless your doctor tells you to.



Do not take:



  • If you are allergic to any of the ingredients


  • If you have phenylketonuria (this medicine contains aspartame, a source of phenylalanine)


  • If you have an intolerance to some sugars, unless your doctor tells you to (this medicine contains glucose)



Talk to your pharmacist or doctor:


  • If you suffer from liver or kidney problems

  • If you are on a low salt (sodium) diet (each sachet contains 276 mg of sodium, which may be harmful to you)

  • If you are on a low potassium diet (each sachet contains 157 mg of potassium, which may be harmful to you)

You can take this medicine if you are pregnant and breastfeeding.




Other important information


Talk to a doctor straight away if an infant under the age of 1 year has diarrhoea.


Diarrhoea is a common symptom of a number of serious stomach and bowel conditions. If your diarrhoea continues for more than 24 to 48 hours or keeps coming back talk to your doctor.




If you take other medicines


This medicine is not expected to affect any other medicines that you may be taking.


If you are unsure about interactions with any medicines, talk to your pharmacist. This includes medicines prescribed by your doctor and medicine you have bought for yourself, including herbal and homeopathic remedies.





How to take this medicine


Check the sachet is not broken before use. If it is, do not take the sachet.



To prepare the medicine


  • 1. Mix the contents of each sachet with 200 ml (seven fluid ounces) of fresh drinking water. For infants use only freshly boiled and cooled water at all times.

  • 2. For adults when fresh drinking water is not available use freshly boiled and cooled water.

  • 3. Prepare the sachet only as needed and drink within one hour once made up. If required the refrigerated solution may be kept for 24 hours.

  • 4. Only use water to make up the contents of the sachet. Make sure you use the right amount of water (i.e. 200 ml for one sachet, 400 ml for two sachets). This is to make sure the salt and water can be absorbed into the body correctly.

Drink the solution.




Adults and children of 12 years and over: Take 1 or 2 sachets dissolved in water, after each loose bowel movement.

Children of 1 to 11 years: Take 1 sachet dissolved in water, after each loose bowel movement





Infants under 1 year: Do not give this medicine unless your doctor tells you to. Follow your doctors instructions and ask your pharmacist if you need more information. If needed stop all solid and liquid feeds. Over the first 24 hours give one to one and a half times the normal feed volume that your baby takes at each feed.



Breastfed infants: Give this medicine at normal feed times only. Then breastfeed until the infant is no longer hungry.



Bottle fed infants: Stop all feeds. Give this medicine at normal feed times only.


As diarrhoea improves re-introduce normal diet.


Do not take or give more than the amount recommended.


Do not take this medicine for more than 24 to 48 hours. If your diarrhoea does not go away within 24 to 48 hours talk to your doctor.



If you take too many sachets: Talk to your pharmacist or doctor.




Possible side effects


This medicine is not expected to cause side effects. If you notice any side effects talk to your pharmacist or doctor.




How to store this medicine


Store below 25°C. Store in a dry place.


Keep this medicine in a safe place out of the sight and reach of children, preferably in a locked cupboard.


Use by the date on the end flap of the carton.




What is in this medicine


Each sachet contains Citric Acid Anhydrous 0.128 g, Glucose Monohydrate 3.58 g, Potassium Chloride 0.3 g, Sodium Chloride 0.47 g, Sodium Citrate Dihydrate 0.39 g which are the active ingredients.


As well as the active ingredients the sachets also contain aspartame (E951,a source of phenylalanine), colloidal silicon dioxide, blackcurrant flavourings.


The pack contains 6 sachets containing granules.




Who makes this medicine


Manufactured for



The Boots Company PLC

Nottingham

NG2 3AA


by the Marketing Authorisation Holder



Wrafton Laboratories Limited

Wrafton

Braunton

Devon

EX33 2DL



Leaflet prepared August 2008


If you would like any further information about this medicine, please contact



The Boots Company PLC

Nottingham

NG2 3AA



Other formats


To request a copy of this leaflet in Braille, large print or audio please call, free of charge:


0800 198 5000 (UK only)


Please be ready to give the following information:


Product name: Boots Rehydration Treatment


Reference number: 12063/0046


This is a service provided by the Royal National Institute of the Blind.


3656eMC





Somazina




Somazina may be available in the countries listed below.


Ingredient matches for Somazina



Citicoline

Citicoline is reported as an ingredient of Somazina in the following countries:


  • Brazil

  • Bulgaria

  • Chile

  • Costa Rica

  • Dominican Republic

  • Ecuador

  • El Salvador

  • Georgia

  • Guatemala

  • Honduras

  • Nicaragua

  • Panama

  • Peru

  • Portugal

  • Spain

  • Venezuela

  • Vietnam

Citicoline sodium salt (a derivative of Citicoline) is reported as an ingredient of Somazina in the following countries:


  • Argentina

  • Brazil

  • Chile

  • Colombia

  • Malta

  • Mexico

International Drug Name Search

Monday, September 26, 2016

Bedol 2mg Tablets





1. Name Of The Medicinal Product



Bedol


2. Qualitative And Quantitative Composition



17-β estradiol 2 mg



3. Pharmaceutical Form



Film Coated Tablet



4. Clinical Particulars



4.1 Therapeutic Indications



Hormone replacement therapy (HRT) for oestrogen deficiency symptoms in peri- and post-menopausal hysterectomised women. Second line therapy for prevention of postmenopausal osteoporosis in women at high risk of future fractures where other therapies are ineffective or inappropriate (2mg).



4.2 Posology And Method Of Administration



Administration: Oral



Bedol is an oestrogen-only product. The calendar pack consists of 28 tablets each containing 2 mg of 17- β estradiol. One tablet is taken on each day of the 28 day treatment cycle.



For initiation and continuation of treatment of postmenopausal symptoms, the lowest effective dose for the shortest duration (see also Section +4.4) should be used.



Starting Bedol



Treatment of hysterectomised women and postmenopausal women may be started on any convenient day. If the patient is menstruating, treatment is started up to day 5 of bleeding. Patients changing from a cyclic or continuous sequential preparation should complete the cycle and then start Bedol without a break in therapy. Patients changing from a continuous combined preparation may start therapy at any time if amenorrhoea is established, or otherwise start on the first day of bleeding.



Progestogen administration (where indicated)



Women with intact uteri should normally use a standard dose of a progestogen in either a cyclic or continuous sequential or continuous combined regimen. Where a progestogen is necessary, it should be added for at least 12 – 14 days every 28 day cycle to reduce the risk to the endometrium (see Section 4.4). It should be started on the recommended day of the cycle, considering the day of the first Bedol tablet to be day 1. If a progestogen has been prescribed as continuous combined therapy it should be started at the same time as Bedol. A menstrual type vaginal bleed occurs at the end of the treatment cycle when progestogens are given as sequential regimens.



Unless there is a previous diagnosis of endometriosis, it is not recommended to add a progestogen in hysterectomised women.



Missed doses



If a dose is forgotten the patient should be advised to take it as soon as they remember. However, if a whole day has passed, patients should be advised not to take the missed tablet but to continue to take one tablet daily. A missed dose may increase the likelihood of break-through bleeding and spotting.



Children or males: Bedol is not intended for children or males.



Use in the elderly: There are no special dosage requirements.



4.3 Contraindications



Known, past or suspected breast cancer;



Known or suspected oestrogen dependent malignant tumours (e.g. endometrial cancer);



Undiagnosed genital bleeding;



Untreated endometrial hyperplasia;



Previous idiopathic or current venous thromboembolism (deep venous thrombosis, pulmonary embolism);



Active or recent arterial thromboembolic disease (e.g. angina, myocardial infarction);



Acute liver disease or a history of liver disease as long as liver function tests has failed to return to normal;



Known hypersensitivity to the active substances or to any of the excipients;



Porphyria;



4.4 Special Warnings And Precautions For Use



For the treatment of postmenopausal symptoms, HRT should only be initiated for symptoms that adversely affect quality of life. In all cases, a careful appraisal of the risks and benefits should be undertaken at least annually and HRT should only be continued as long as the benefit outweighs the risk



Medical examination/follow-up



Before initiating or reinstituting HRT, a complete personal and family medical history should be taken. Physical (including pelvic and breast) examination should be guided by this and by the contraindications (section 4.3) and warnings (section 4.4) for use. During treatment, periodic check-ups are recommended of a frequency and nature adapted to the individual woman. Women should be advised what changes in their breasts should be reported to their doctor or nurse (see 'Breast cancer' below). Investigations, including mammography, should be carried out in accordance with currently accepted screening practices, modified to the clinical needs of the individual.



Conditions which need supervision



If any of the following conditions are present, have occurred previously, and/or have been aggravated during pregnancy or previous hormone treatment, the patient should be closely supervised. It should be taken into account that these conditions may recur or be aggravated during treatment with Bedol, in particular:



- Leiomyoma (uterine fibroids) or endometriosis;



- A history of, or risk factors for, thromboembolic disorders (see below);



- Risk factors for oestrogen dependent tumours, e.g. 1st degree heredity for breast cancer;



- Hypertension;



- Liver disorders (e.g. liver adenoma);



- Diabetes mellitus with or without vascular involvement;



- Cholelithiasis;



- Migraine or severe headache;



- Systemic lupus erythematosus;



- A history of endometrial hyperplasia (see below);



- Epilepsy;



- Asthma;



- Otosclerosis.



Reasons for immediate withdrawal of therapy



Therapy should be discontinued when a contra-indication is discovered and in the following situations:



- Jaundice or deterioration in liver function;



- Significant increase in blood pressure;



- New onset of migraine-type headache;



- Pregnancy.



Endometrial hyperplasia



The risk of endometrial hyperplasia and carcinoma is increased when oestrogens are administered alone for prolonged periods (see section 4.8). The addition of a progestogen for at least 12 days per cycle in non-hysterectomised women greatly reduces this risk.



Break-through bleeding and spotting may occur during the first months of treatment. If break-through bleeding or spotting appears after some time on therapy, or continues after treatment has been discontinued, the reason should be investigated, which may include endometrial biopsy to exclude endometrial malignancy.



Unopposed oestrogen stimulation may lead to premalignant or malignant transformation in the residual foci of endometriosis. Therefore, the addition of progestogens to oestrogen replacement therapy should be considered in women who have undergone hysterectomy because of endometriosis, if they are known to have residual endometriosis.



Breast cancer



A randomised placebo-controlled trial, the Women's Health Initiative study (WHI), and epidemiological studies including the Million Women Study (MWS) have reported an increased risk of breast cancer in women taking oestrogens, oestrogen-progestogen combinations or tibolone for HRT for several years (see Section 4.8). For all HRT, an excess risk becomes apparent within a few years of use and increases with duration of intake but returns to baseline within a few (at most five) years after stopping treatment.



In the MWS, the relative risk of breast cancer with conjugated equine oestrogens (CEE) or estradiol (E2) was greater when a progestogen was added, either sequentially or continuously, and regardless of type of progestogen. There was no evidence of a difference in risk between the different routes of administration.



In the WHI study, the continuous combined conjugated equine oestrogen and medroxyprogesterone acetate (CEE + MPA) product used was associated with breast cancers that were slightly larger in size and more frequently had local lymph node metastases compared to placebo.



HRT, especially oestrogen-progestogen combined treatment, increases the density of mammographic images which may adversely affect the radiological detection of breast cancer.



Venous thromboembolism



HRT is associated with a higher relative risk of developing venous thromboembolism (VTE), i.e. deep vein thrombosis or pulmonary embolism. One randomised controlled trial and epidemiological studies found a two to threefold higher risk for users compared with non-users. For non-users, it is estimated that the number of cases of VTE that will occur over a 5 year period is about 3 per 1000 women aged 50-59 years and 8 per 1000 women aged between 60-69 years. It is estimated that in healthy women who use HRT for 5 years, the number of additional cases of VTE over a 5 year period will be between 2 and 6 (best estimate = 4) per 1000 women aged 50-59 years and between 5 and 15 (best estimate = 9) per 1000 women aged 60-69 years. The occurrence of such an event is more likely in the first year of HRT than later.



Generally recognised risk factors for VTE include a personal history or family history, severe obesity (Body Mass Index> 30 kg/m2) and systemic lupus erythematosis (SLE). There is no consensus about the role of varicose veins in VTE.



Patients with a history of VTE or known thrombophilic states have an increased risk of VTE. HRT may add to this risk. Personal or strong family history of thromboembolism or recurrent spontaneous abortion should be investigated in order to exclude a thrombophilic predisposition. Until a thorough evaluation of thrombophilic factors has been made or anticoagulant treatment initiated, use of HRT in such patients should be viewed as contraindicated. Those women already on anticoagulant treatment require careful consideration of the benefit-risk of use of HRT.



The risk of VTE may be temporarily increased with prolonged immobilisation, major trauma or major surgery. As in all post-operative patients, scrupulous attention should be given to prophylactic measures to prevent VTE following surgery. Where prolonged immobilisation is liable to follow elective surgery, particularly abdominal or orthopaedic surgery to the lower limbs, consideration should be given to temporarily stopping HRT four to six weeks earlier, if possible. Treatment should not be started until the woman is completely mobilised.



If VTE develops after initiating therapy, the drug should be discontinued. Patients should be told to contact their doctors immediately when they are aware of a potential thromboembolic symptom (e.g. painful swelling of a leg, sudden pain in the chest, dyspnoea).



Coronary artery disease (CAD)



There is no evidence from randomised controlled trials of cardiovascular benefit with continuous combined conjugated oestrogens and medroxyprogesterone acetate (MPA). Two large clinical trials (WHI and HERS i.e. Heart and Estrogen/progestin Replacement Study) showed a possible increased risk of cardiovascular morbidity in the first year of use and no overall benefit. For other HRT products there are only limited data from randomised controlled trials examining effects in cardiovascular morbidity or mortality. Therefore it is uncertain whether these findings also extend to other HRT products.



Stroke



One large randomised clinical trial (WHI-trial) found, as a secondary outcome, an increased risk of ischaemic stroke in healthy women during treatment with continuous combined conjugated oestrogens and MPA (medroxyprogesterone acetate). For women who do not use HRT, it is estimated that the number of cases of stroke that will occur over a 5 year period is about 3 per 1000 women aged 50-59 years and 11 per 1000 women aged 60-69 years. It is estimated that for women who use conjugated oestrogens and MPA for 5 years, the number of additional cases will be between 0 and 3 (best estimate = 1) per 1000 users aged 50-59 years and between 1 and 9 (best estimate 4) per 1000 users aged 60-69 years. It is unknown whether the increased risk also extends to other HRT products.



Ovarian cancer



Long-term (at least 5-10 years) use of oestrogen-only HRT products in hysterectomised women has been associated with an increased risk of ovarian cancer in some epidemiological studies. It is uncertain whether long-term use of combined HRT confers a different risk than oestrogen-only products.



Other conditions



Oestrogens may cause fluid retention, and therefore patients with cardiac or renal dysfunction should be carefully observed. Patients with terminal renal insufficiency should be closely observed since it is expected that the level of circulating active ingredient (17β-estradiol) in Bedol is increased.



Women with pre-existing hypertriglyceridemia should be followed closely during oestrogen replacement or hormone replacement therapy since rare cases of large increases in plasma triglycerides leading to pancreatitis have been reported with oestrogen therapy in this condition.



Oestrogens increase thyroid binding globulin (TBG), leading to increased circulating total thyroid hormone, as measured by protein bound iodine (PBI), T4 levels (by column or radio-immunoassay) or T3 levels (by radioimmunoassay). T3 resin uptake is decreased, reflecting the elevated TBG. Free T4 and free T3 concentrations are unaltered. Other binding proteins may be elevated in serum, i.e. corticoid binding globulin (CBG), sex-hormone-binding globulin (SHBG) leading to increased circulating corticosteroids and sex steroids, respectively. Free or biologically active hormone concentrations are unchanged. Other plasma proteins may be increased (angiotensinogen/renin substrate, alpha-1-antitrypsin, ceruloplasmin).



There is no conclusive evidence for improvement of cognitive function. There is some evidence from the WHI trial of increased risk of probable dementia in women who start using continuous combined CEE and MPA after the age of 65. It is unknown whether the findings apply to younger post-menopausal women or other HRT products.



Bedol is not an oral contraceptive neither will it restore fertility. Women of child bearing potential should be advised to adhere to non-hormonal contraceptive methods.



4.5 Interaction With Other Medicinal Products And Other Forms Of Interaction



The metabolism of oestrogens may be increased by concomitant use of substances known to induce drug-metabolising enzymes, specifically cytochrome P450 enzymes, such as anticonvulsants (eg phenobarbital, phenytoin, carbamazepine) and anti-infectives (e.g. rifampicin, rifabutin, nevirapine, efavirenz). Ritonavir and nelfinavir, although known as strong inhibitors, by contrast exhibit inducing properties when used concomitantly with steroid hormones. Herbal preparations containing St John's wort (Hypericum Perforatum) may induce the metabolism of oestrogens.



Clinically, an increased metabolism of oestrogens may lead to decreased effect and changes in the uterine bleeding profile.



4.6 Pregnancy And Lactation



Bedol is not indicated during pregnancy. If pregnancy occurs during medication with Bedol treatment should be withdrawn immediately. The results of most epidemiological studies to date, relevant to inadvertent foetal exposure to oestrogens, indicate no teratogenic or foetotoxic effects.



Bedol is not indicated during lactation.



4.7 Effects On Ability To Drive And Use Machines



No effects on the ability to drive and use machines are reported.



4.8 Undesirable Effects



NB: Patients with intact uteri taking progestogens for endometrial safety may report symptoms associated with this class of drugs. These include vaginal bleeding and premenstrual-like symptoms. (See also Section 4.4 for further information on endometrial hyperplasia)



Genito-urinary system - increase in size of uterine fibroids, vaginal candidiasis, change in cervical erosion and in degree of cervical secretion, cystitis like syndrome.



Breasts - tenderness, enlargement, secretion, breast cancer (see below)



Gastrointestinal - nausea, vomiting, abdominal cramps, bloating, cholestatic jaundice.



Skin - chloasma or melasma, which may persist when drug is discontinued, erythema multiforme, erythema nodusum, haemorrhagic eruption.



Eyes - steepening of corneal curvature, intolerance to contact lenses.



CNS - headaches, migraine, dizziness, chorea.



Miscellaneous - increase or decrease in weight, reduced carbohydrate tolerance, aggravation of porphyria, oedema, change in libido, leg cramps.



Breast Cancer



According to evidence from a large number of epidemiological studies and one randomised placebo-controlled trial, the Women's Health Initiative (WHI), the overall risk of breast cancer increases with increasing duration of HRT use in current or recent HRT users.



For oestrogen-only HRT, estimates of relative risk (RR) from a reanalysis of original data from 51 epidemiological studies (in which>80% of HRT use was oestrogen-only HRT) and from the epidemiological Million Women Study (MWS) are similar at 1.35 (95%CI 1.21 – 1.49) and 1.30 (95%CI 1.21 – 1.40), respectively.



For oestrogen plus progestogen combined HRT, several epidemiological studies have reported an overall higher risk for breast cancer than with oestrogens alone.



The MWS reported that, compared to never users, the use of various types of oestrogen-progestogen combined HRT was associated with a higher risk of breast cancer (RR = 2.00, 95%CI: 1.88 – 2.12) than use of oestrogens alone (RR = 1.30, 95%CI: 1.21 – 1.40) or use of tibolone (RR=1.45; 95%CI 1.25-1.68).



The WHI trial reported a risk estimate of 1.24 (95%CI 1.01 – 1.54) after 5.6 years of use of oestrogen-progestogen combined HRT (CEE + MPA) in all users compared with placebo.



The absolute risks calculated from the MWS and the WHI trial are presented below:



The MWS has estimated, from the known average incidence of breast cancer in developed countries, that:




























For women not using HRT, about 32 in every 1000 are expected to have breast cancer diagnosed between the ages of 50 and 64 years.


  


 




• For 1000 current or recent users of HRT, the number of additional cases during the corresponding period will be.


 


 




• For users of oestrogen-only replacement therapy,


 


 




 




• Between 0 and 3 (best estimate = 1.5) for 5 years' use.




 




 




• Between 3 and 7 (best estimate = 5) for 10 years' use.




 




• For users of oestrogen plus progestogen combined HRT,


 


 




 




• Between 5 and 7 (best estimate = 6) for 5 years' use.




 




 




• Between 18 and 20 (best estimate = 19) for 10 years' use.



The WHI trial estimated that after 5.6 years of follow-up of women between the ages of 50 and 79 years, an additional 8 cases of invasive breast cancer would be due to oestrogen-progestogen combined HRT (CEE + MPA) per 10,000 women years.







According to calculations from the trial data, it is estimated that:
 

 


• For 1000 women in the placebo group,





 


• About 16 cases of invasive breast cancer would be diagnosed in 5 years.





 


• For 1000 women who used oestrogen + progestogen combined HRT (CEE + MPA), the number of additional cases would be,





 


• Between 0 and 9 (best estimate = 4) for 5 years' use.



The number of additional cases of breast cancer in women who use HRT is broadly similar for women who start HRT irrespective of age at start of use (between the ages of 45-65) (see section 4.4).



Endometrial cancer



In women with an intact uterus, the risk of endometrial hyperplasia and endometrial cancer increases with increasing duration of use of unopposed oestrogens. According to data from epidemiological studies, the best estimate of the risk is that for women not using HRT, about 5 in every 1000 are expected to have endometrial cancer diagnosed between the ages of 50 and 65. Depending on the duration of treatment and oestrogen dose, the reported increase in endometrial cancer risk among unopposed oestrogen users varies from 2-to 12-fold greater compared with non-users. Adding a progestogen to oestrogen-only therapy greatly reduces this increased risk.



Other adverse reactions have been reported in association with oestrogen treatment:



– Oestrogen dependent neoplasms benign and malignant, e.g. endometrial cancer.



– Venous thromboembolism, i.e. deep leg or pelvic venous thrombosis and pulmonary embolism, is more frequent among HRT users than among non-users. For further information see sections “4.3 Contraindications” and “4.4 Warnings and precautions for use”.



– Myocardial infarction and stroke.



– Gall bladder disease.



– Probable dementia (see section 4.4).



4.9 Overdose



Nausea and vomiting may occur after overdose. Treatment should be symptomatic; there is no specific antidote.



5. Pharmacological Properties



5.1 Pharmacodynamic Properties



The active ingredient, synthetic 17- β estradiol, is chemically and biologically identical to endogenous human estradiol. It substitutes for the loss of oestrogen production in menopausal women, and alleviates menopausal symptoms.



5.2 Pharmacokinetic Properties



17- β estradiol is absorbed rapidly after oral administration. The rate and completeness of absorption of 17- β estradiol in Bedol were found to be bioequivalent to Zumenon as assessed by the maximum concentrations of achieved (Bedol Cmax = 187 pmol/L), time to maximum concentration (Tmax) and area under the concentration time curve (AUC).



5.3 Preclinical Safety Data



Studies in animals have indicated that administration of very high doses of oestrogens will induce neoplastic tumours in some animal species.



The results of preclinical studies of 17- β estradiol have not suggested any unwanted effects at therapeutic doses used in humans.



6. Pharmaceutical Particulars



6.1 List Of Excipients










17 - β estradiol tablet


  


Lactose



Crospovidone



Povidone



Talc



Magnesium stearate



Opadry White Y-1-7000




EP



USNF



EP



EP



EP



HSE




86.0 mg



4.0 mg



5.0 mg



2.5 mg



0.5 mg



2.0 mg



6.2 Incompatibilities



No chemical or physical incompatibilities are noted.



6.3 Shelf Life



Three years from date of manufacture.



6.4 Special Precautions For Storage



Store below 25°C protected from light and moisture.



6.5 Nature And Contents Of Container



PVC and aluminium foil calendar blister pack enclosed in a cardboard carton.



6.6 Special Precautions For Disposal And Other Handling



Not applicable.



ADMINISTRATIVE DATA


7. Marketing Authorisation Holder



ReSource Medical UK Limited



2 Carlton Avenue, Staincliff



Batley



WF17 7AQ, UK



8. Marketing Authorisation Number(S)



PL 21812/0001



9. Date Of First Authorisation/Renewal Of The Authorisation



18 August 1997



10. Date Of Revision Of The Text



February 2005




Thursday, September 22, 2016

Stavudine


Class: Nucleoside and Nucleotide Reverse Transcriptase Inhibitors
VA Class: AM800
Chemical Name: 2′,3′-Didehydro-3′-deoxythymidine
CAS Number: 3056-17-5
Brands: Zerit



  • Lactic acidosis and severe hepatomegaly with steatosis (including some fatalities) reported rarely in patients receiving nucleoside reverse transcriptase inhibitors (NRTIs) alone or in conjunction with other antiretrovirals.1 (See Lactic Acidosis and Severe Hepatomegaly with Steatosis under Cautions.)




  • Fatal lactic acidosis reported in pregnant women receiving stavudine and didanosine with other antiretrovirals.1 Stavudine in conjunction with didanosine should be used with caution in pregnant women and only if potential benefits outweigh potential risks.1 (See Pregnancy under Cautions.)




  • Fatal and nonfatal pancreatitis reported in patients receiving stavudine and didanosine with or without hydroxyurea.1 (See Pancreatitis under Cautions.)



REMS:


FDA approved a REMS for stavudine to ensure that the benefits of a drug outweigh the risks. However, FDA later rescinded REMS requirements. See the FDA REMS page () or the ASHP REMS Resource Center ().



Introduction

Antiretroviral; nucleoside reverse transcriptase inhibitor (NRTI).1 2 3 4 5 6 7 8 9 10 11 12 16 17 20 21 23 24


Uses for Stavudine


Treatment of HIV Infection


Treatment of HIV-1 infection in conjunction with other antiretrovirals.1


No longer a preferred or alternative NRTI for initial therapy in adults (increasing reports of toxicity).43


Postexposure Prophylaxis of HIV


Postexposure prophylaxis of HIV infection in health-care workers and others exposed occupationally via percutaneous injury or mucous membrane or nonintact skin contact with blood, tissues, or other body fluids associated with risk for transmission of the virus.63 Used in conjunction with other antiretrovirals.63


Postexposure prophylaxis of HIV infection in individuals who have had nonoccupational exposure to blood, genital secretions, or other potentially infectious body fluids of a person known to be infected with HIV when that exposure represents a substantial risk for HIV transmission.76 Used in conjunction with other antiretrovirals.76


Stavudine Dosage and Administration


Administration


Oral Administration


Administer orally without regard to meals.1 43


Reconstitution

Reconstitute powder for oral solution at time of dispensing by adding the amount of purified water specified to provide a solution containing 1 mg/mL.1


Agitate suspension well prior to administration of each dose.1


Dosage


Must be given in conjunction with other antiretrovirals.1


Pediatric Patients


Treatment of HIV Infection

Oral

Birth to 13 days of age: 0.5 mg/kg every 12 hours.1 53


≥14 days of age weighing <30 kg: 1 mg/kg every 12 hours.1 53


≥30 kg to <60 kg: 30 mg twice daily.1 53


≥60 kg: 40 mg twice daily.1 53


Temporarily interrupt stavudine if peripheral neuropathy occurs.1 If peripheral neuropathy resolves completely, reinitiate using doses 50% of the usually recommended pediatric dose.1 (See Peripheral Neuropathy under Cautions.)


Adults


Treatment of HIV

Oral

<60 kg: 30 mg twice daily.1 43


≥60 kg: 40 mg twice daily.1 43


Temporarily interrupt stavudine if peripheral neuropathy occurs.1 If peripheral neuropathy resolves, reinitiate with 15 mg twice daily in those weighing <60 kg and 20 mg twice daily in those weighing ≥60 kg.1 (See Peripheral Neuropathy under Cautions.)


Postexposure Prophylaxis of HIV

Occupational Exposure

Oral

<60 kg: 30 mg twice daily.63


≥60 kg: 40 mg twice daily; if toxicity develops, use 20–30 mg twice daily.63


Initiate postexposure prophylaxis as soon as possible following exposure (within hours rather than days) and continue for 4 weeks, if tolerated.63


Nonoccupational Exposure

Oral

<60 kg: 30 mg twice daily.76


≥60 kg: 40 mg twice daily.76


Initiate postexposure prophylaxis as soon as possible following exposure (preferably ≤72 hours after exposure) and continue for 28 days.76


Special Populations


Renal Impairment


Treatment of HIV Infection

Consider a reduction in the dose and/or an increase in the dosing interval in pediatric patients with renal impairment;1 53 data insufficient to recommend a specific dose adjustment.1


















Table 1. Dosage in Adults with Renal Impairment143

Clcr (mL/minute)



Weighing <60 kg



Weighing≥60 kg



≥50



30 mg every 12 hours



40 mg every 12 hours



26–50



15 mg every 12 hours



20 mg every 12 hours



10–25



15 mg every 24 hours



20 mg every 24 hours



Hemodialysis Patients



15 mg every 24 hours given after completion of dialysis and at the same time of day on days that patient does not undergo hemodialysis



20 mg every 24 hours given after completion of dialysis and at the same time of day on days that patient does not undergo hemodialysis


Cautions for Stavudine


Contraindications



  • Known hypersensitivity to stavudine or any ingredient in the formulation.1



Warnings/Precautions


Warnings


Lactic Acidosis and Severe Hepatomegaly with Steatosis

Lactic acidosis and severe hepatomegaly with steatosis (sometimes fatal) reported in patients receiving stavudine.1 Reported most frequently in women; obesity and long-term NRTI therapy also may be risk factors.1 Has been reported in patients with no known risk factors.1


Reported in pregnant women receiving stavudine in conjunction with didanosine.1 (See Pregnancy under Cautions.)


Use with caution in patients with known risk factors for liver disease.1


Interrupt therapy if there are clinical or laboratory findings suggestive of lactic acidosis or pronounced hepatotoxicity (e.g., hepatomegaly and steatosis even in the absence of marked increases in serum aminotransferase concentrations).1


Interactions

Concomitant use with didanosine (with or without hydroxyurea) associated with increased risk of hepatotoxicity and pancreatitis.1 (See Specific Drugs under Interactions.)


Concomitant use with ribavirin and interferon (interferon alfa, peginterferon alfa) associated with increased risk of fatal hepatic decompensation in patients coinfected with HCV and HIV.1 80 (See Specific Drugs under Interactions.)


Peripheral Neuropathy

Peripheral neuropathy, manifested by numbness, tingling, or pain in the hands or feet, reported; these effects occur more frequently in patients with advanced HIV, a history of neuropathy, or those receiving other neurotoxic drugs, including didanosine.1


Dosage modification or discontinuance may be necessary.1 Patients whose symptoms resolve after the drug is discontinued may tolerate a reduced stavudine dosage; if neuropathy recurs, permanent discontinuance should be considered.1


Other Nervous System Effects

Rapidly ascending neuromuscular weakness, which has been fatal in some cases, reported rarely in patients receiving stavudine in conjunction with other antiretrovirals.1 75 Most reported cases of motor weakness occurred in the setting of lactic acidosis.1 75


The evolution of motor weakness may mimic the clinical presentation of Guillain-Barré syndrome (including respiratory failure); symptoms may continue or worsen following discontinuance of antiretroviral therapy.1 Discontinue stavudine if motor weakness develops.75


Pancreatitis

Fatal and nonfatal pancreatitis reported in patients receiving stavudine in conjunction with didanosine in both treatment-naive and previously treated patients, regardless of degree of immunosuppression.1 46


Interrupt treatment with stavudine, didanosine, and any other agent toxic to the pancreas in patients with signs or symptoms of pancreatitis.1 Reinitiation of stavudine therapy following a confirmed diagnosis of pancreatitis should be undertaken with particular caution and close patient monitoring.1 If stavudine is reinitiated in these patients, didanosine should not be included in the regimen.1


General Precautions


Adipogenic Effects

Possible redistribution or accumulation of body fat, including central obesity, dorsocervical fat enlargement (“buffalo hump”), peripheral wasting, breast enlargement, and general cushingoid appearance.1


Immune Reconstitution Syndrome

During initial treatment, patients who respond to antiretroviral therapy may develop an inflammatory response to indolent or residual opportunistic infections (e.g., Mycobacterium avium complex [MAC], M. tuberculosis, cytomegalovirus [CMV], Pneumocystis jiroveci [formerly P. carinii]); this may necessitate further evaluation and treatment.1


Specific Populations


Pregnancy

Category C.1 Antiretroviral Pregnancy Registry at 800-258-4263.1


Some experts state stavudine is an alternative (not a preferred) NRTI for use in multiple-drug antiretroviral regimens in pregnant women.25


Do not use stavudine in conjunction with zidovudine in pregnant women because of potential antagonist antiretroviral effects.25


Fatal lactic acidosis reported in pregnant women receiving stavudine and didanosine with other antiretrovirals.1 43 Unclear whether pregnancy potentiates risk of lactic acidosis and severe hepatotoxicity with steatosis that occurs in NRTI-treated individuals.1 Stavudine in conjunction with didanosine should be used with caution in pregnant women and only if no other options are available.1 43


Clinicians caring for pregnant patients receiving stavudine should be alert for early diagnosis of lactic acidosis and hepatitis steatosis syndrome.1


Lactation

Stavudine distributed into milk in rats; not known whether distributed into human milk.1


Instruct HIV-infected women not to breast-feed because of risk of HIV transmission and risk of adverse effects in the infant.1


Pediatric Use

Use in pediatric patients from birth through adolescence supported by evidence from adequate and well-controlled studies in adults with additional pharmacokinetic and safety data in pediatric patients.1


Adverse effects in pediatric patients generally are similar to those reported in adults.1


Geriatric Use

Insufficient experience in those ≥65 years of age to determine whether they respond differently than younger adults, but increased sensitivity cannot be ruled out.1


Peripheral neuropathy reported in geriatric individuals; monitor these patients for signs and symptoms of peripheral neuropathy.1


Substantially eliminated by the kidneys; geriatric patients more likely to have decreased renal function; monitor renal function and adjust dosage accordingly.1 18


Hepatic Impairment

Safety and efficacy not established in patients with clinically important hepatic disease.1


Increased incidence of liver function abnormalities, including potentially fatal hepatic adverse effects, reported in patients with preexisting hepatic impairment.1


Monitor patients with liver function abnormalities.1 Interrupt or discontinue therapy if liver disease worsens.1


Renal Impairment

Dosage adjustments needed based on degree of renal impairment.1 (See Renal Impairment under Dosage and Administration.)


Common Adverse Effects


Headache, diarrhea, peripheral neurologic symptoms/neuropathy, rash, nausea and vomiting.1


Interactions for Stavudine


Does not inhibit CYP1A2, 2C9, 2C19, 2D6, 3A4.1


Specific Drugs




























































Drug



Interaction



Comments



Abacavir



In vitro evidence of additive or synergistic antiretroviral effects1



Clarithromycin



Pharmacokinetic interactions unlikely38



Darunavir



Pharmacokinetic interactions unlikely78



Didanosine



Pharmacokinetic interactions unlikely46


Concomitant use of didanosine and stavudine (with or without hydroxyurea): Possible increased risk of toxicities (pancreatitis, peripheral neuropathy, hyperlactatemia)1 43


In vitro evidence of additive or synergistic antiretroviral effects28 29



Concomitant use of didanosine and stavudine: Avoid concomitant use unless potential benefits outweigh risks43


Avoid concomitant use of didanosine, hydroxyurea, and stavudine1



Doxorubicin



Inhibits stavudine phosphorylation in vitro1



Clinical importance unknown; use concomitantly with caution1



Emtricitabine



Pharmacokinetic interaction unlikely79


In vitro evidence of additive or synergistic antiretroviral effects79



Fluconazole



Pharmacokinetic interactions unlikely38



Ganciclovir



Pharmacokinetic interactions unlikely54



Hydroxyurea



Concomitant use of didanosine and stavudine (with or without hydroxyurea): Potential for increased risk of pancreatitis, peripheral neuropathy, hepatotoxicity1



Avoid concomitant use of hydroxyurea and stavudine1



Interferon (interferon alfa, peginterferon alfa)



Possible increased risk of potentially fatal hepatic decompensation in patients coinfected with HCV and HIV who are receiving interferon alfa, ribavirin, and antiretroviral agents1 80



If stavudine used in patients receiving interferon alfa or peginterferon alfa (with or without ribavirin), closely monitor for toxicities, especially hepatic decompensation; consider discontinuing stavudine as appropriate; if worsening toxicities (e.g., hepatic decompensation Child-Pugh >6) are observed, consider discontinuing or reducing dosage of interferon and/or ribavirin1 80



Lamivudine



Pharmacokinetic interactions unlikely1


In vitro evidence of additive or synergistic antiretroviral effects28 29



Methadone



Decreased stavudine peak plasma concentrations and AUC;31 43 no change in methadone concentrations31



Dosage adjustments not necessary43



Nelfinavir



Pharmacokinetic interactions unlikely33


In vitro evidence of additive or synergistic antiretroviral effects28 32 33 35



Dosage adjustments not needed33



Ribavirin



Ribavirin can reduce phosphorylation of stavudine; no evidence of pharmacokinetic or pharmacodynamic interaction1


Possible increased risk of potentially fatal hepatic decompensation in patients coinfected with HCV and HIV who are receiving interferon alfa or peginterferon alfa, ribavirin, and antiretroviral agents1 80


Possible increase in adverse effects (lactic acidosis, pancreatitis)65 66 68



If stavudine used in patients receiving interferon alfa or peginterferon alfa (with or without ribavirin), closely monitor for toxicities, especially hepatic decompensation; consider discontinuing stavudine as appropriate; if worsening toxicities (e.g., hepatic decompensation Child-Pugh >6) are observed, consider discontinuing or reducing dosage of interferon and/or ribavirin1 80



Rifabutin



Decreased stavudine peak plasma concentrations and AUC38



Saquinavir



In vitro evidence of additive or synergistic antiretroviral effects28 32 33 35



Tipranavir



Pharmacokinetic interaction unlikely77


In vitro evidence of additive antiretroviral effects77



Zidovudine



In vitro evidence of antagonism1 26 40



Concomitant use not recommended1 43


Stavudine Pharmacokinetics


Absorption


Bioavailability


Well absorbed; peak plasma concentrations attained within 1 hour.1 Bioavailability is 86%.1


Stavudine capsules and oral solution are bioequivalent.1


Food


Food delays time to peak concentrations; no effect on AUC.69


Special Populations


Peak plasma concentration and time to peak concentration not altered in patients with renal impairment.1


Distribution


Extent


Not well characterized.1 Distributed into semen.74


Distributed into CSF in adults and pediatric patients.1 70 71


Not known whether crosses the placenta or is distributed into human milk.1


Plasma Protein Binding


Negligible.1


Elimination


Metabolism


Metabolic fate not elucidated.1


Intracellularly, stavudine is phosphorylated and converted by cellular enzymes to the active 5′-triphosphate metabolite.1 2 4 8 17 22


Elimination Route


Eliminated in the urine (40%) by glomerular filtration and active tubular secretion; remaining 60% presumably eliminated by endogenous pathways.1


Removed by hemodialysis.1 18 Not known whether removed by peritoneal dialysis.1


Half-life


1.6 hours.1


Half-life is 0.96 hours in pediatric patients 5 weeks to 15 years of age; 1.59 hours in those 14–28 days of age; 5.27 hours in those 1 day of age.1


Special Populations


Pharmacokinetics not altered in patients with hepatic impairment (Child-Pugh class B or C).1


Apparent oral clearance of stavudine decreases and half-life increases as Clcr decreases.1


Stability


Storage


Oral


Capsules

15–30°C in tightly closed containers.1


Powder for Solution

15–30°C.1 Following reconstitution with water, oral solution stable for 30 days when refrigerated at 2–8°C.1 Unused portions of reconstituted oral solution should be discarded after 30 days.1


Actions and Spectrum



  • Analog of thymidine, a naturally occurring pyrimidine.1 2 3 4 6 8 9 16




  • Pharmacologically related to other NRTIs (e.g., abacavir, didanosine, emtricitabine, lamivudine, zidovudine); differs structurally from these drugs; also differs pharmacologically and structurally from other currently available antiretrovirals.1




  • Active in vitro against HIV-11 2 3 4 9 10 11 12 16 17 20 21 23 24 27 28 and HIV-2.27




  • Inhibits replication of HIV by interfering with viral RNA-directed DNA polymerase (reverse transcriptase).1 2 3 4 9 12 16 17 21 23




  • Strains of HIV-1 with reduced susceptibility to stavudine have been produced in vitro and have emerged during therapy with the drug.1 27




  • Strains of HIV resistant to stavudine may be cross-resistant to some other NRTIs.1 27




  • Cross-resistance between stavudine and HIV protease inhibitors (PIs) is highly unlikely since the drugs have different target enzymes.43 Cross-resistance between stavudine and nonnucleoside reverse transcriptase inhibitors (NNRTIs) is considered to be low since the drugs bind at different sites on reverse transcriptase and have different mechanisms of action.43



Advice to Patients



  • Critical nature of compliance with HIV therapy.1 Importance of using stavudine in conjunction with other antiretrovirals—not for monotherapy.1




  • Antiretroviral therapy is not a cure for HIV infection, and opportunistic infections still may occur.1 HIV transmission via sexual contact or sharing needles is not prevented by antiretrovirals.1




  • Possibility of lactic acidosis; patients who experience symptoms of lactic acidosis (abdominal discomfort, nausea, vomiting, fatigue, dyspnea, motor weakness) should seek immediate medical attention.1 Discontinuation of the drug may be required.1




  • Possibility of peripheral neuropathy; manifestations include numbness, tingling, or pain in hands or feet.1 Advise patient to report these symptoms to their clinician.1 Dosage modification or discontinuance may be needed.1




  • Possibility of pancreatitis, including fatal pancreatitis if used with didanosine.1




  • Importance of patient reading the patient package insert from manufacturer.1




  • Redistribution/accumulation of body fat may occur, with as yet unknown long-term health effects.1




  • Importance of informing clinician of existing or contemplated concomitant therapy, including prescription and OTC drugs and dietary or herbal products, and any concomitant illnesses.1




  • Importance of women informing clinicians if they are or plan to become pregnant or plan to breast-feed.1




  • Importance of advising patients of other important precautionary information.1 (See Cautions.)



Preparations


Excipients in commercially available drug preparations may have clinically important effects in some individuals; consult specific product labeling for details.


* available from one or more manufacturer, distributor, and/or repackager by generic (nonproprietary) name


























































Stavudine

Routes



Dosage Forms



Strengths



Brand Names



Manufacturer



Oral



Capsules



15 mg*



Stavudine Capsules



Zerit



Bristol-Myers Squibb



20 mg*



Stavudine Capsules



Zerit



Bristol-Myers Squibb



30 mg*



Stavudine Capsules



Zerit



Bristol-Myers Squibb



40 mg*



Stavudine Capsules



Zerit



Bristol-Myers Squibb



For solution



1 mg/mL*



Stavudine for Oral Solution



Zerit



Bristol-Myers Squibb


Comparative Pricing


This pricing information is subject to change at the sole discretion of DS Pharmacy. This pricing information was updated 10/2011. Actual costs to patients will vary depending on the use of specific retail or mail-order locations and health insurance copays.


Stavudine 40MG Capsules (CAMBER PHARMACEUTICALS): 60/$129.99 or 180/$369.97


Zerit 1MG/ML Solution (B-M SQUIBB ONCOLOGY/IMMUNOLOGY): 200/$87.99 or 600/$255.97


Zerit 15MG Capsules (B-M SQUIBB ONCOLOGY/IMMUNOLOGY): 60/$363.99 or 180/$1,050.34


Zerit 20MG Capsules (B-M SQUIBB ONCOLOGY/IMMUNOLOGY): 60/$388.98 or 180/$1,126.01


Zerit 30MG Capsules (B-M SQUIBB ONCOLOGY/IMMUNOLOGY): 60/$416.98 or 180/$1,197.99


Zerit 40MG Capsules (B-M SQUIBB ONCOLOGY/IMMUNOLOGY): 60/$426.97 or 180/$1,225.97



Disclaimer

This report on medications is for your information only, and is not considered individual patient advice. Because of the changing nature of drug information, please consult your physician or pharmacist about specific clinical use.


The American Society of Health-System Pharmacists, Inc. and Drugs.com represent that the information provided hereunder was formulated with a reasonable standard of care, and in conformity with professional standards in the field. The American Society of Health-System Pharmacists, Inc. and Drugs.com make no representations or warranties, express or implied, including, but not limited to, any implied warranty of merchantability and/or fitness for a particular purpose, with respect to such information and specifically disclaims all such warranties. Users are advised that decisions regarding drug therapy are complex medical decisions requiring the independent, informed decision of an appropriate health care professional, and the information is provided for informational purposes only. The entire monograph for a drug should be reviewed for a thorough understanding of the drug's actions, uses and side effects. The American Society of Health-System Pharmacists, Inc. and Drugs.com do not endorse or recommend the use of any drug. The information is not a substitute for medical care.

AHFS Drug Information. © Copyright, 1959-2011, Selected Revisions October 27, 2011. American Society of Health-System Pharmacists, Inc., 7272 Wisconsin Avenue, Bethesda, Maryland 20814.


† Use is not currently included in the labeling approved by the US Food and Drug Administration.




References



1. Bristol-Myers Squibb. Zerit (stavudine) capsules and powder for oral solution prescribing information. Princeton, NJ; 2008 Nov.



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