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Genoptic Side Effects

Generic Name: gentamicin ophthalmic

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

For the Consumer

Applies to gentamicin ophthalmic: ophthalmic ointment, ophthalmic solution

Along with its needed effects, gentamicin ophthalmic (the active ingredient contained in Genoptic) 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 gentamicin ophthalmic:

Less Common

  • Itching, redness, swelling, or other sign of irritation not present before use of this medicine
  • redness of eye, eyelid, or inner lining of eyelid


  • Black, tarry stools; blood in urine or stools; or unusual bleeding or swelling
  • blurred vision, eye pain, sensitivity to light, and/or tearing
  • seeing, hearing, or feeling things that are not there
  • hallucinations

Some side effects of gentamicin ophthalmic may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Less Common

  • Burning or stinging

After application, eye ointments usually cause your vision to blur for a few minutes.

For Healthcare Professionals

Applies to gentamicin ophthalmic: ophthalmic ointment, ophthalmic solution


Ocular side effects have included burning and irritation upon administration, nonspecific conjunctivitis, conjunctival hyperemia, and conjunctival epithelial defects.[Ref]


Hematologic side effects have rarely included thrombocytopenic purpura.[Ref]


Psychiatric side effects have rarely included hallucinations.[Ref]


Hypersensitivity reactions have been reported.[Ref]


Other side effects have included the development of fungal and bacterial corneal ulcers during therapy.[Ref]


1. "Product Information. Garamycin (gentamicin ophthalmic)." Schering Corporation, Kenilworth, NJ.

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.

More about Genoptic (gentamicin ophthalmic)

Consumer resources

Other brands: Gentak, Gentacidin, Gentasol, Ocu-Mycin

Professional resources

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