<unk>  <unk> , also known as<unk> , is an antiviral medication. It is primarily used for the treatment of herpes simplex virus infections, chickenpox, and shingles. Other uses include prevention of cytomegalovirus infections following transplant and severe complications of Epstein–Barr virus infection. It can be taken by mouth, applied as a cream, or injected. Common side effects include nausea and diarrhea. Potentially serious side effects include kidney problems and low platelets. Greater care is recommended in those with poor liver or kidney function. It is generally considered safe for use in pregnancy with no harm having been observed. It appears to be safe during breastfeeding.<unk>  is a nucleoside analogue that mimics guanosine. It works by decreasing the production of the virus's DNA.<unk>  was patented in 1974, and approved for medical use in 1981. It is on the World Health Organization's List of Essential Medicines. It is available as a generic medication and is marketed under many brand names worldwide. In 2019, it was the 157th most commonly prescribed medication in the United States, with more than 3million prescriptions.
Aciclovir
Penciclovir
Valganciclovir
Famciclovir
Ganciclovir
Alcaftadine
Benzylpenicillin
Amantadine