Famvir is an antiviral medication used to treat herpes simplex virus infections, including cold sores, genital herpes, and shingles. It is also used to prevent recurrent outbreaks of genital herpes. Famvir is in a class of medications called antivirals. It works by slowing the growth and spread of the virus.
Famvir is available as a tablet or an oral suspension. It is taken by mouth, usually two or three times a day for five days. The dosage and length of treatment will depend on the type of infection being treated. People with kidney or liver disease may need to take a lower dosage.
Common side effects of Famvir include headache, nausea, vomiting, diarrhea, stomach pain, dizziness, and tiredness. Serious side effects can include mental/mood changes, unusual changes in the amount of urine, easy bruising or bleeding, or signs of kidney problems. It is important to tell your doctor if you experience any of these side effects.
Famvir’s active ingredient is famciclovir. It is also available under other names, including Famtrex, Ancivin, and Famvir.
Famvir can be effective in treating herpes simplex virus infections and preventing recurrent outbreaks of genital herpes. However, it is important to take the medication as prescribed by your doctor and to be aware of potential side effects. People with kidney or liver disease should inform their doctor before taking Famvir.