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

Applies to gentamicin ophthalmic: ophthalmic ointment, ophthalmic solution.

Serious side effects of Gentak

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

Rare

• 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

Other side effects of Gentak

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

Common (1% to 10%): Conjunctival epithelial defects, conjunctival hyperemia, non-specific conjunctivitis, ocular burning, ocular irritation

Frequency not reported: Bacterial corneal ulcer, blurred vision, eye irritation, eye pruritus, fungal corneal ulcer

Postmarketing reports: Eye discharge, eye edema, eye pain, eye swelling, eyelid irritation, eyelid edema, ocular hyperemia^[Ref]

Hypersensitivity

Rare (0.01% to 0.1%): Allergic reactions

Frequency not reported: Sensitivity reactions

Postmarketing reports: Hypersensitivity^[Ref]

Psychiatric

Rare (0.01% to 0.1%): Hallucinations^[Ref]

Hematologic

Rare (0.01% to 0.1%): Thrombocytopenic purpura^[Ref]

Local

Frequency not reported: Burning sensation, itching, local sensitivity, stinging sensation, transient irritation^[Ref]

Other

Frequency not reported: Hearing loss, ototoxicity, stinging, vestibular disorder^[Ref]

Dermatologic

Frequency not reported: Dermatitis, itching, pruritus^[Ref]

Immunologic

Frequency not reported: Superinfection^[Ref]

Renal

Frequency not reported: Acute renal failure, nephrotoxicity^[Ref]