Dexamethasone-Tobramycin

What Is Dexamethasone-Tobramycin?

Dexamethasone-tobramycin is a prescription eye medication that combines two medicines in one product:

• Dexamethasone, a corticosteroid (steroid) that reduces inflammation
• Tobramycin, an aminoglycoside antibiotic that treats certain bacterial infections

It is used only in the eye. It is not taken by mouth or injected.

Approved uses and common prescribed uses

• Treating steroid-responsive inflammation of the eye when there is a bacterial eye infection or a risk of bacterial infection. This often includes inflammation of the front of the eye, eyelids, or after eye surgery or injury, as decided by an eye specialist.

Available formulations and strengths

• Ophthalmic suspension (eye drops): commonly dexamethasone 0.1% / tobramycin 0.3%, and a lower-steroid version of dexamethasone 0.05% / tobramycin 0.3%
• Ophthalmic ointment: commonly dexamethasone 0.1% / tobramycin 0.3%
• The eye drops are a cloudy liquid that must be shaken before use.

Availability varies by country and brand. Each strength has its own detailed page.

What Is the Recommended Dosage of Dexamethasone-Tobramycin?

Dosing depends on several factors:

• Condition: The schedule depends on how severe the inflammation and infection are.
• Age: Safety and effectiveness are not established in very young children. Use in children should only be directed by a pediatric eye specialist.
• Body weight: Weight is generally not used to set the dose of eye drops or ointment.
• Organ function: Dose changes are not usually needed for kidney or liver problems, but tell your specialist about these conditions.

Dosage forms: eye drop suspension and eye ointment.

The prescriber decides which form and strength to use, how much, in which eye, how often, and for how long. The treatment is usually short-term and may be lowered slowly as the eye improves. Shake the suspension well before each use. Do not use it longer than directed. Do not stop early or change your schedule without speaking with your specialist.

How Dexamethasone-Tobramycin Works

Each ingredient has a different job:

• Dexamethasone calms the body’s inflammatory response in the eye, reducing redness, swelling, and discomfort.
• Tobramycin kills or stops the growth of many types of bacteria by blocking their ability to make proteins.

The medicine treats the inflammation and the bacterial infection or risk of infection. It does not work against viruses or fungi, and it does not treat the cause of non-bacterial eye disease.

Is a Prescription Required to Buy Dexamethasone-Tobramycin Online?

Yes. Dexamethasone-tobramycin is prescription-only. A licensed ophthalmologist (or another licensed eye care professional) must evaluate you and diagnose your condition first.

Safety when buying online

• Buy only from licensed, verified pharmacies that require a valid prescription.
• Avoid websites that sell prescription eye medicines without a prescription.
• Counterfeit, expired, or improperly stored eye products can cause eye infection or vision harm. Do not use veterinary products.
• Check the packaging, label, and seal when it arrives. Ask a pharmacist if anything looks unusual.

Side Effects of Dexamethasone-Tobramycin

Common Side Effects

• Eye irritation, burning, or stinging when applied
• Eye redness or itching
• Eyelid swelling, redness, or itching
• Blurred vision for a short time (especially with the ointment)
• Watery eyes
• Feeling that something is in the eye

Serious Side Effects

These are uncommon but need prompt attention.

• Raised eye pressure (glaucoma): eye pain, headache, halos around lights, or vision changes. Steroids can raise eye pressure and damage the optic nerve.
• Cataract formation: cloudy or hazy vision with longer use
• Worsening or new eye infection: pus, increasing pain, sticky discharge, or worsening redness. Steroids can hide signs of infection or make fungal and viral (herpes) infections worse.
• Allergic reaction to tobramycin: itching, swelling, and redness of the eye or eyelids, or swelling of the face, lips, tongue, or throat; hives; trouble breathing
• Slow healing: delayed healing of the eye or surgical wound
• Thinning of the cornea or white of the eye, which may rarely lead to a hole
• Whole-body effects (rare with long or heavy use), such as steroid effects on the adrenal glands

Seek emergency medical care for trouble breathing, swelling of the face or throat, or sudden loss of vision. Contact your specialist promptly if eye pain or redness gets worse, vision changes, or you notice signs of infection or allergy.

Drug Interactions

Few drug interactions are known with dexamethasone-tobramycin eye products, but some are important:

• Other aminoglycoside antibiotics taken by mouth or injection (such as gentamicin, neomycin, or amikacin): may add to the risk of kidney or hearing problems if enough tobramycin is absorbed
• Other steroid medicines (eye drops, creams, inhalers, or tablets): may add to the risk of raised eye pressure and other steroid effects
• Eye drops containing NSAIDs: combined use may slow healing in some people and should be guided by your specialist
• Strong CYP3A4-inhibiting medicines (such as certain antifungals and HIV medicines): may increase body exposure to steroids with heavy or long use
• Other eye drops or ointments: wait at least 5 to 10 minutes between different eye medicines, and use ointments last

OTC medicines, supplements, and herbal products do not commonly interact with these eye products. Still, give your licensed specialist and pharmacist a full list of everything you take, including eye drops, creams, vitamins, and supplements.

Safety & Important Considerations

• Eye pressure checks: Your specialist may check your eye pressure regularly, especially if you use the medicine for 10 days or longer.
• Infections: Steroids can hide the signs of infection and let some infections grow, including fungal and herpes infections. Tell your specialist right away if your eye gets worse.
• Aminoglycoside allergy: Tell your specialist if you have ever had a reaction to tobramycin, gentamicin, neomycin, or similar antibiotics. Cross-reactions can occur.
• Overgrowth of other germs: Long use of an antibiotic may allow germs that are not affected by it, including fungi, to grow.
• Glaucoma or cataracts: Tell your specialist if you already have these conditions.
• Slow healing and thin eye tissue: Use caution with conditions that thin the cornea or white of the eye.
• Pregnancy and breastfeeding: Human data are limited. Aminoglycosides taken by mouth or injection can harm a developing baby, and the amount absorbed from eye products is usually small. Discuss risks and benefits with your specialist before use, especially if you are pregnant or planning pregnancy.
• Children: Use only under the direction of a pediatric eye specialist. Children should have their eye pressure monitored closely.
• Older adults: No special dose change is usually needed.
• Contact lenses: Do not wear contact lenses while you have an eye infection or inflammation unless your specialist says it is safe. If you do wear them, remove them before use and wait at least 15 minutes before reinserting.
• Driving and machinery: The eye drops, and especially the ointment, may briefly blur your vision. Avoid these activities until your vision is clear.
• Hygiene: Do not touch the dropper tip or tube tip to your eye or any surface. Contaminated eye products can cause serious eye infections.
• Do not share your bottle or tube with others.

Who This Medication Is For

• Adults and, in some cases, children with steroid-responsive eye inflammation who also have a bacterial eye infection or a risk of one, as directed by an eye specialist
• People recovering from certain eye surgery or injury where both inflammation and infection risk need to be managed

Who Should Not Take Dexamethasone-Tobramycin

• Anyone allergic to dexamethasone, tobramycin, other aminoglycosides, other steroids, or any ingredient in the product
• People with viral infections of the cornea or conjunctiva, including herpes simplex keratitis, vaccinia, and varicella
• People with fungal infections of the eye
• People with mycobacterial infections of the eye, such as tuberculosis

Tell your specialist about all medical conditions before starting treatment.

What to Do If You Miss a Dose

• Use the missed dose as soon as you remember.
• If it is almost time for the next dose, skip the missed one and return to your usual schedule.
• Do not double the dose to make up for a missed one.
• If you are unsure what to do, contact your licensed specialist or pharmacist.

Related medications to Dexamethasone-Tobramycin

Only a licensed specialist can decide whether a different treatment suits you.

• Other steroid-antibiotic combination eye products (for example, loteprednol-tobramycin, dexamethasone-neomycin-polymyxin B, or prednisolone-gentamicin), where available
• A steroid eye drop and an antibiotic eye drop used separately, as chosen by your specialist
• Other antibiotic eye drops (for example, moxifloxacin, ofloxacin, or erythromycin ointment) when inflammation is not the main concern
• NSAID eye drops (for example, ketorolac, bromfenac, nepafenac) for inflammation after eye surgery

Do not stop or switch treatments on your own. Changes should be made only after consultation with your specialist.

Storage Instructions

• Store at room temperature, typically 46°F to 80°F (8°C to 27°C) for suspensions and 36°F to 77°F (2°C to 25°C) for ointments, unless your label says otherwise.
• Shake the suspension well before each use.
• Keep containers tightly closed and protect from moisture, heat, and direct light.
• Do not freeze.
• Keep out of reach and sight of children. Accidental swallowing of eye products can be dangerous for young children. Seek emergency help if this happens.
• Do not use past the expiration date. Eye product containers should be discarded within a set time after opening (often about 4 weeks). Follow your label and pharmacist’s guidance.

Disclaimer:

This page is for educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Patients must consult a licensed ophthalmologist or another relevant medical specialist before starting, changing, or stopping treatment. Treatment decisions must be based on a full clinical evaluation by a qualified specialist.