Zirgan is a medication prescribed to treat herpes outbreaks in the eye. Ganciclovir, the active ingredient, works by slowing the growth and spread of the cytomegalovirus. While this cannot cure herpes, it can minimize the outbreak.
Zirgan is a medicine used in the treatment of eye ulcers caused by the cytomegalovirus. The active ingredient, ganciclovir, is an antiviral drug which is administered as a gel to the affected eye, or eyes.
Zirgan works by disrupting DNA synthesis, specifically by preventing the elongation of the DNA chain. Without DNA, the viral cells cannot produce essential proteins and cannot reproduce. While this does not actively kill all viral cells, it limits the reproduction of the virus.
Common side effects with Zirgan include blurred vision, eye irritation, and increased tear production. Some patients also experience eye pain, and severe burning or vision changes.