used to treat adults with hepatitis C, an infectious disease that affects the liver, caused by the hepatitis C virus. 

Treatment of CMV-infections of the retina of the eye in adult patients with acquired immunodeficiency syndrome (AIDS). CMV-infection of the retina of the eye can cause vision problems and even blindness. , To prevent CMV-infections in adults and children who are not infected with CMV and who have received an organ transplant from somebody who was infected by CMV.

used to treat chronic (long term) hepatitis B virus (HBV) infection in adults

used to treat chronic (long term) hepatitis B virus (HBV) infection in adults

treat hepatitis C virus infection in adults of 18 years and older.

used to treat cold sores and genital infections causedby the Herpes simplex virus.

Clovir can be used to: -Treat chickenpox and shingles. -Treat cold sores, genital herpes and other herpes simplex infections. -Stop these problems returning after you have had them. -Stop these problems in people whose immune systems work less well, which means their bodies are less able to fight infections.