How much does Gentak cost?

Pricing for Gentak varies by insurance plan, dose, and pharmacy. Our database does not show a fixed cost because prices change faster than we can verify. For current pharmacy prices, check your insurance's formulary tier (in the prior-authorization section), use the GoodRx or Cost Plus Drugs deep links on this page, or ask your pharmacist to run a test claim. If a copay card is listed, it usually drops the out-of-pocket significantly for commercial insurance.

Does Gentak need prior authorization?

Gentak appears on 1 payer formulary in our database. PA requirements vary by payer — see the prior-authorization table on this page for specifics. In general, specialty and brand-name drugs are more likely to require PA than generic equivalents.

Is there a copay card or patient assistance program for Gentak?

We haven't verified an active copay card or PAP for Gentak in our current data. Check NeedyMeds or RxAssist for independent directories, or submit what you find via our "Report a broken link" form.

What is Gentak used to treat?

Gentak (generic: Gentamicin Sulfate) is indicated for Keratitis, Keratoconjunctivitis, Pink Eye and 2 other conditions. Click any condition name on this page for more detail.

Does Gentak have a generic version?

The generic name for Gentak is Gentamicin Sulfate. Whether a generic is currently available depends on patent status — check the FDA Orange Book or ask your pharmacist. Generics are often substantially cheaper than brand-name drugs.

Gentak

Generic: Gentamicin Sulfate

Verified·Apr 23, 2026

Manufacturer: Akorn
NDC: 63187-873
RxCUI: 310466
Route: OPHTHALMIC
ICD-10 indication: H10.0

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About Gentak

What is this medication? Gentak is a prescription medication categorized as an ophthalmic antibiotic used to treat bacterial infections of the eyes. It contains the active ingredient gentamicin, which is part of the aminoglycoside family of drugs. Doctors typically prescribe this medication for conditions like bacterial conjunctivitis, blepharitis, and other external eye infections caused by specific types of bacteria.

The medication functions by interfering with the protein synthesis of bacteria, which inhibits their growth and allows the body to clear the infection. It is usually administered directly to the eye in the form of drops or ointment. To achieve the best results and prevent the return of the infection, it is important for patients to use the medication for the full duration of time recommended by their doctor.

Copay & patient assistance

Detailed copay and financial assistance information is not publicly available for this medication at this time. Please consult your pharmacist or the manufacturer's official patient support program for more details.

External links go directly to the manufacturer's portal. RxCopays does not receive compensation for referrals.

Compare pricing elsewhere

RxCopays doesn't sell drugs or take referral fees. Here are the transparent-pricing directories we recommend checking alongside your insurance formulary.

Cost Plus Drug Company

Mark Cuban's transparent-pricing pharmacy — manufacturer cost + 15% markup + $5 dispensing fee. No insurance needed. Search alphabetically for Gentamicin Sulfate.

Browse Cost Plus medications →

GoodRx

Compare local pharmacy prices with GoodRx coupons. Use the price with your insurance or without — whichever is cheaper.

Lookup Gentak →

NeedyMeds

Independent nonprofit directory of patient assistance programs, copay cards, and charity co-pay foundations.

Search for Gentamicin Sulfate →

RxAssist

PAP directory maintained by Volunteers in Health Care at Brown University. Free, no ads.

Search PAPs →

We deep-link because transparency helps patients. None of these partners pay RxCopays.

Prescribing information

From the FDA-approved label for Gentak. Official source: DailyMed (NLM) · Label effective Nov 1, 2019

Indications and usage

INDICATIONS AND USAGE Gentamicin sulfate ophthalmic ointment is indicated in the topical treatment of ocular bacterial infections including conjunctivitis, keratitis, keratoconjunctivitis, corneal ulcers, blepharitis, blepharonconjunctivitis: acute meibomianitis, and dacryocystitis, caused by susceptible strains of the following microorganisms: Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pyogenes, Streptococcus pneumoniae, Enterobacter aerogenes, Escherichia coli, Haemophilus influenzae, Klebsiella pneumoniae, Neisseria gonorrhoeae, Pseudomonas aeruginosa, and Serratia marcescens.

Dosage and administration

DOSAGE AND ADMINISTRATION Apply a small amount (approximately 1/2 inch ribbon) of ointment to the affected eye(s) two or three times a day.

Contraindications

CONTRAINDICATIONS Gentamicin sulfate ophthalmic ointment is con-traindicated in patients with known hypersensitivity to any of the components.

Warnings

WARNINGS NOT FOR INJECTION INTO THE EYE. Gentamicin sulfate ophthalmic ointment is not for injection. It should never be injected subconjunctivally, nor should it be directly introduced into the anterior chamber of the eye.

Adverse reactions

ADVERSE REACTIONS Bacterial and fungal corneal ulcers have developed during treatment with gentamicin ophthalmic preparations. The most frequently reported adverse reactions are ocular burning and irritation upon drug instillation, non-specific conjunctivitis, conjunctival epithelial defects and conjunctival hyperemia. Other adverse reactions which have occurred rarely are allergic reactions, thrombocytopenic purpura and hallucinations.

Use in pregnancy

Pregnancy: Pregnancy Category C. Gentamicin has been shown to depress body weights, kidney weights and median glomerular counts in newborn rats when administered systemically to pregnant rats in daily doses approximately 500 times the maximum recommended ophthalmic human dose. There are no adequate and well-controlled studies in pregnant women. Gentamicin should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.

Label text is reproduced as-is from the FDA-approved label. We do not paraphrase, summarize, or omit. Content above is for informational purposes only and is not medical advice. Always consult your prescribing clinician or pharmacist before making decisions about your medication.

Conditions we've indexed resources for

Click a condition to see copay cards, grants, and PA rules specific to it. For the full list of FDA-approved indications, see Prescribing information above.

Prior authorization & coverage

Payer	PA	Step therapy	Copay tier
— Medicare Part D	—	—	—

Payer

Step therapy

Copay tier

—

Medicare Part D

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Related drugs

How this page is sourced

Drug identity verified against openFDA NDC Directory.
Label text (when shown) originates from NLM DailyMed.
Copay and assistance URLs verified periodically; if you hit a broken link, tell us.