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Drug Description
Generic Famvir is an antiviral medicine. It contains the active component of famciclovir. It is a white to pale yellow solid that is freely soluble in acetone and methanol, and thinly soluble in ethanol and isopropanol. The inactive ingredients in Famvir tablets are hydroxypropyl cellulose, lactose, hydroxypropyl methylcellulose, magnesium stearate, sodium starch glycolate, polyethylene glycols, and titanium dioxide.
Drug Indications
Famvir is a drug prescribed for the treatment of herpes zoster, commonly known as "shingles," in adults. The symptoms include a painful rash with raised and red pimples on the body, typically the back. People who had suffered from chickenpox in the past usually experience shingles. This drug also treats genital herpes and to avoid future flare-ups. In HIV infected people, this drug is used to treat for both genital and oral herpes.
Drug Contraindications
This drug should not be administered to patients <18 years of age. It also may not be applied in patients with ophthalmic zoster. The safety has not been studied in immune-compromised patients except for the treatment of recurrent orolabial or genital herpes in HIV-infected patients.
An Important Note
Famvir is beneficial if used within the first 48 hours after shingles first emerges; treatment needs to be started at the first sign or symptom of genital herpes. It may not help if the treatment is delayed over 72 hours after the herpes zoster rash first appears or more than 6 hours after genital herpes appears.
Dosage
To treat herpes zoster in adults, dose of 500 milligrams every 8 hours for 7 days is recommended. In recurrent genital herpes treatment, adults can take 125 milligrams twice a day for 5 days. For recurrent genital herpes prevention, the common dose is 250 milligrams twice a day for up to one year. To treat recurrent oral or genital herpes in HIV-infected individuals, dose of 500 milligrams twice a day for 7 days has been approved. People with damaged kidneys need a smaller dose.
Administration
It is essential to take Famvir for the full course, even if you feel better. You should not take it more often or for a longer time than your doctor directs. It may be taken with meals or in between.
Side Effects
Use of this drug may give rise to many unwanted side effects. If you grow any signs of side effects or change in intensity, notify your doctor immediately possible. The doctor will suggest whether you should continue it or stop it. Some of the side effects may include: constipation, dizziness, diarrhea, fatigue, fever, nausea, headache, and vomiting.
Drug Interactions
Using Famvir may cause serious problems if taken with certain other drugs. It will increase, decrease, or alter the effects of either medicine. You must seek advice from your doctor before combining this drug with probenecid, a drug that is applied for the treatment of gout (a type of arthritis).
Warnings
Famvir heals shingles and genital herpes, but it doesn't cure. There is likelihood of transmission of genital herpes to others, thus it is advised to avoid sexual contact whenever you have symptoms of the disease. Before using this drug tell your doctor, if you have any kidney problems.
Famvir doesn't treat herpes infection of the eye, herpes infections throughout the body, or the first genital herpes infection a person experiences (although it is approved for subsequent outbreaks). Also, it should not be applied to treat shingles in HIV infected people or with other immune system problems. Famvir tablets possess lactose and should be avoided by people having galactose intolerance or very severe lactose intolerance.
Synonym
United States: Famvir
United Kingdom: Famvir
Thailand: Famvir
Switzerland: Famvir
Sweden: Famvir Famvir
Spain: Ancivin
Singapore: Famvir
South Africa: Famvir
Russia: Famvir (Фамвир)
New Zealand: Famvir
Netherlands: Famvir
Italy: Famvir
Israel: Famvir
Ireland: Famvir
India: Famtrex
Hungary: Famvir
Hong Kong: Famvir
Greece: Famvir
Germany: Famvir
France: Oravir
Finland: Famvir
Denmark: Famvir
Czech Republic: Famvir
Canada: Famvir Penvir Fanclomax
Brazil: Famvir*
Belgium: Famvir
Austria: Famvir
Australia: Famvir Zosvir*
Argentina: Pentavir
