Spectrum Thea Pharmaceuticals
Zirgan (ganciclovir) is an antiviral drug. It slows the growth and spread of the cytomegalovirus (CMV).
Zirgan ophthalmic gel is used to treat eye ulcers caused by the herpes simplex virus.
Zirgan is not a cure for CMV or herpes. This medication will not treat symptoms of these infections in any other part of the body.