Famvir and Valtrex are drugs that are used for the treatment of herpes virus. These antiviral prescription drugs help treat genital infections by slowing their progression and keep the infections from coming back. Both these drugs are used to treat health conditions such as cold sores, shingles (herpes zoster), and chicken pox. Adults as well as children can use these drugs. Though these drugs are almost similar, there are some differences that separate them. Let us have a look at them.
- The active ingredient in Valtrex is valacyclovir and in Famvir is famciclovir.
- Valtrex comes in a 500mg pill form or an oral suspension form either in 50mg or 25mg doses. Famvir comes in small, round or oval tablets which are coated with a protective film in 125, 250, or 500 mg doses.
Note: Both these drugs are available only by prescription.
- Famvir is taken for treating shingles. For this, a 500mg dose has to be taken twice over a period of seven days, and 125 mg tablet twice a day for five days. Valtrex tablets or oral suspension drops treats shingles only if taken three times per day for a period of seven days. Both these medications can be taken with or without food and tablets should be taken with a full glass of water.
These drugs might lose their effectiveness if taken in combination with other medications. Other than losing effectiveness, they also cause damage. So, if you planning to take either of them with other drugs, consult a doctor before doing so.