This medicine is an antiviral used to treat herpes zoster (shingles) and genital herpes. It may also be used to treat other conditions as determined by your doctor.

This medicine may be taken on an empty stomach or with food. TO CLEAR UP YOUR INFECTION COMPLETELY, continue taking this medicine for the full course of treatment, even if you feel better in a few days. Do not miss any doses. IF YOU MISS A DOSE OF THIS MEDICINE, 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.

Famvir Side Effects:

Fambvir side effects that may go away during treatment, include headache, nausea, vomiting, diarrhea, or tiredness. If they continue or are bothersome, check with your doctor. CONTACT YOUR DOCTOR IMMEDIATELY if you experience hallucinations, disorientation, or confusion. If you notice other effects not listed above, contact your doctor, nurse, or pharmacist. The efficacy of FAMVIR has not been established for the treatment of an initial outbreak of genital herpes infection. The safety and efficacy of FAMVIR for suppressive therapy beyond 1 year of treatment have not been established. Even with antiviral treatment, it is possible to spread the herpes virus. There is no cure for genital herpes. Famvir is supplied as film-coated tablets as follows: 125 mg in bottles of 30; 250 mg in bottles of 30; and 500 mg in bottles of 30.