Tobrex
Tobrex
What is Tobrex?
Tobramycin eye drops, commonly known as Tobrex, are designed to treat bacterial eye infections. This prescription medication works by stopping the growth of bacteria. If you're looking for a Tobrex coupon or need to refill your prescription online, connect with a licensed provider through Rx.com for more information and savings options.
Side Effects
- Eye irritation that was not there before using the medicine
- Blurred vision is common for the first few minutes after using. If it continues, talk with your doctor.
Warnings
- Check with your doctor if your condition worsens, or does not get better while using tobramycin.
Prescription savings · · · ·
What is Tobrex ?
Tobramycin eye drops, commonly known as Tobrex, are designed to treat bacterial eye infections. This prescription medication works by stopping the growth of bacteria. If you're looking for a Tobrex coupon or need to refill your prescription online, connect with a licensed provider through Rx.com for more information and savings options.
- Eye irritation that was not there before using the medicine
- Blurred vision is common for the first few minutes after using. If it continues, talk with your doctor.
- Check with your doctor if your condition worsens, or does not get better while using tobramycin.
Tobrex Coupons & Prices
Tobrex
Weight-loss medication, prescribed online
Licensed U.S. providers · No insurance needed · Shipped to your door
Tobrex prices by dosage
Lowest cash price with a free Rx.com coupon vs. the average retail price.
| Dosage | Quantity | Retail price | Rx.com price |
|---|---|---|---|
| 3.5gm of 0.3% · Tube | 3.5 | $420.69 | $305.95 |
Cash prices near ZIP 77433; updated regularly. Actual pharmacy price may vary.
Looking for a Tobrex coupon? Tobrex (tobramycin ophthalmic 0.3%) is a brand-name aminoglycoside antibiotic eye drop and eye ointment used to treat bacterial infections of the eye and eyelid. Which form you were prescribed matters here: the drop has FDA-approved generic versions sold in the US, while the ointment is currently sold only as brand Tobrex. Prices vary a lot from one pharmacy to another, so enter your ZIP above to see today's price near you and print or show the free Rx.com cash coupon at the counter. Rx.com is not insurance and this page is not medical advice.
What is Tobrex and how does it work?
Tobrex is a water-soluble aminoglycoside antibiotic applied directly to the eye. It is active against a wide range of gram-negative and gram-positive ocular bacteria, notably Pseudomonas aeruginosa and Staphylococcus species. The FDA-approved labels for both forms describe the approved use in a single general sentence: Tobrex is "a topical antibiotic indicated in the treatment of external infections of the eye and its adnexa caused by susceptible bacteria." The label does not name individual conditions. In practice, external eye infections a prescriber might treat with an antibiotic drop or ointment can include things like bacterial conjunctivitis (pink eye) or inflammation of the eyelid margin, but whether Tobrex is the right choice for any specific diagnosis is a decision for your eye doctor. Your eye doctor should monitor how the infection responds to treatment.
Tobrex comes in two forms: a 0.3% ophthalmic solution (drops) and a 0.3% ophthalmic ointment. The label describes drops given about every 4 hours for mild-to-moderate infection, and as often as hourly for severe infection; the ointment is applied as a half-inch ribbon two or three times a day, or every 3 to 4 hours if the infection is severe. Follow the schedule your prescriber gives you, and do not stop early just because the eye looks better. Tobrex is for use in or around the eye only. It is never injected into the eye.
Manufacturer savings card vs. the Rx.com cash coupon
We are not aware of a current manufacturer copay savings card for Tobrex. In general, when a brand-name drug does offer one, those cards are limited to people with commercial (job-based or marketplace) insurance, exclude Medicare, Medicaid, and other government coverage, and come with terms that change over time. If you ever see a card advertised for Tobrex, check it on the manufacturer's own official website rather than trusting a third-party page, and read the eligibility terms carefully. We do not link savings-card pages here because those links break often.
The Rx.com cash coupon is a different tool. It is a discount on the cash price, so it can be used whether you are uninsured, on Medicare, or simply told at the counter that your plan will not cover the drop or ointment. You cannot combine it with insurance on the same fill, but you can ask the pharmacist to run both and take whichever comes out lower. Enter your ZIP above to compare today's price at pharmacies near you.
Generic tobramycin: the savings lever depends on your form
This is the single most useful thing to understand about paying for Tobrex, and it is easy to get wrong. Generic tobramycin ophthalmic 0.3% solution is FDA-approved and marketed in the US by several manufacturers. It contains the same active ingredient at the same strength as brand Tobrex drops. If you were prescribed the drops, talking with your prescriber about writing for the generic, or asking the pharmacist whether a substitution is permitted, is worth doing. Whether a pharmacist may swap a generic for the brand without calling your prescriber depends on your state's substitution law and on the generic's FDA therapeutic-equivalence rating, so it is a question to ask rather than assume.
The ointment is a different story. As of this writing there is no FDA-approved generic tobramycin ophthalmic ointment marketed in the US, so the ointment is available only as brand Tobrex. If that is what you were prescribed, asking for "the generic" will not get you anywhere, because there is nothing for the pharmacist to substitute. Comparing the cash price across pharmacies is the lever that is actually available to you on the ointment, and prices for it can differ meaningfully store to store. If cost is a real barrier, that is worth raising with your eye doctor, who is the right person to say whether the drop form or a different antibiotic would be appropriate for your diagnosis.
Related eye antibiotics your prescriber may consider, depending on the bug and the situation, include TobraDex and Zylet (both combine an antibiotic with a steroid), Vigamox (moxifloxacin, a fluoroquinolone), and Polytrim (polymyxin B and trimethoprim). These are not interchangeable with Tobrex. Which one is right depends on the diagnosis, and that is a decision for your eye doctor, not a price comparison.
Safety, side effects, and cautions
Tobrex has no boxed warning. It should not be used by anyone with a known allergy to tobramycin or to any ingredient in the product. The most frequent reactions are hypersensitivity and localized ocular toxicity, including lid itching and swelling and conjunctival erythema, reported in fewer than 3 out of 100 patients treated. If sensitivity develops, stop using it and call your prescriber. Cross-sensitivity with other aminoglycoside antibiotics is possible, and serious systemic aminoglycoside allergic reactions, including anaphylaxis and skin reactions such as Stevens-Johnson syndrome and erythema multiforme, have been reported. Prolonged use can allow non-susceptible organisms, including fungi, to overgrow.
A few practical points: the ointment can blur your vision for a while after you apply it, so do not drive or use machinery until your vision clears. The label advises not wearing contact lenses if you have signs and symptoms of a bacterial eye infection, and the solution contains benzalkonium chloride 0.01% as a preservative, which can be absorbed by soft contact lenses. Never let the dropper or tube tip touch your eye, your fingers, or any surface, as that contaminates the product. Systemic (injected) aminoglycosides can damage the kidneys and hearing; if you are receiving tobramycin systemically at the same time, your provider should monitor your total serum concentration. This page is a summary, not medical advice, and the label notes that safety and effectiveness have not been established in patients below 2 months of age. Talk to your doctor or pharmacist about your own situation.
This Tobrex information was written and reviewed against authoritative U.S. medical sources — MedlinePlus (U.S. National Library of Medicine), DailyMed, and FDA prescribing information — and checked for accuracy. It is provided for education and is not a substitute for professional medical advice.
Verify the official label: Tobrex on DailyMed (FDA)
Reviewed against FDA labeling · Last reviewed July 2026
Browse more medications: starting with T · full A-Z directory · by condition · common drugs
Medical disclaimer: This information is provided for general educational purposes only and is not medical advice. It is not a substitute for professional diagnosis or treatment. Always consult a licensed physician, pharmacist, or other qualified healthcare provider before starting, stopping, or changing any medication or treatment. Never disregard professional medical advice or delay seeking it because of something you read here. If you think you may have a medical emergency, call your doctor or 911 immediately.