<unk> , also spelled<unk> , is an antiviral medication used to treat outbreaks of herpes simplex or herpes zoster (shingles). It is also used to prevent cytomegalovirus following a kidney transplant in high risk cases. It is taken by mouth. Common side effects include headache and vomiting. Severe side effects may include kidney problems. Use in pregnancy appears to be safe. It is a prodrug, which works after being converted to aciclovir in a person's body.<unk>  was patented in 1987 and came into medical use in 1995. It is on the World Health Organization's List of Essential Medicines. It is available as a generic medication. In 2019, it was the 110th most commonly prescribed medication in the United States, with more than 5million prescriptions.
Valaciclovir
Umifenovir
Letermovir
Oseltamivir
Balapiravir
Favipiravir
Rovafovir etalafenamide
Coronavir