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Zirgan Side Effects

Generic name: ganciclovir ophthalmic

Medically reviewed by Last updated on Oct 10, 2022.

Note: This document contains side effect information about ganciclovir ophthalmic. Some dosage forms listed on this page may not apply to the brand name Zirgan.

Applies to ganciclovir ophthalmic: ophthalmic gel/jelly.

Serious side effects of Zirgan

Along with its needed effects, ganciclovir ophthalmic (the active ingredient contained in Zirgan) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking ganciclovir ophthalmic:

More common

  • Blurred vision
  • red, sore eyes

Less common

  • Painful irritation of the clear front part of the eye
  • redness of the white part of eyes or inside of the eyelids

For Healthcare Professionals

Applies to ganciclovir ophthalmic: intraocular implant, ophthalmic gel.


The following side effects are for the ophthalmic gel only; if available, the manufacturer product information for the intraocular implant should be consulted for additional information.


Very common (10% or more): Blurred vision (60%), eye irritation (20%), transient burning/stinging sensations

Common (1% to 10%): Punctate keratitis, conjunctival hyperemia[Ref]


1. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0

2. "Product Information. Zirgan (ganciclovir ophthalmic)." Sirion Therapeutics (2009):

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.