Famciclovir is used to treat infections caused by certain types of viruses. It treats shingles caused by herpes zoster. It also treats outbreaks of herpes simplex that cause cold sores around the mouth, sores around the anus, and genital herpes. In people with frequent outbreaks of genital herpes, famciclovir is used to help reduce the number of future episodes.
This medication contains 2 ingredients: acyclovir and hydrocortisone. It is used to treat cold sores/fever blisters caused by a virus (herpes simplex). Acyclovir is an antiviral medication that works by stopping the growth of the virus. Hydrocortisone is a corticosteroid that helps relieve itching, pain, and burning symptoms. This medication can speed up healing of cold sores, but it does not cure herpes or prevent passing the infection to someone else. It also does not prevent cold sores from returning.