Drug Class: Antibiotic + Corticosteroid Combination | Form: Ophthalmic Suspension | Prescription Status: Prescription Only (Rx)
What Are Tobradex Eye Drops?
Tobradex Eye Drops (5ml) is a prescription combination ophthalmic suspension containing two active ingredients that work together to treat eye conditions where both infection and inflammation are present simultaneously. Each millilitre contains Tobramycin 3mg — an aminoglycoside antibiotic that kills bacteria — and Dexamethasone 1mg — a potent corticosteroid that reduces swelling, redness, and pain in the eye.
This dual-action formula addresses a common clinical challenge: inflammation of the eye that either accompanies a bacterial infection or occurs in situations where bacterial infection is a real risk. Using an antibiotic alone would leave inflammation untreated; using a steroid alone in the presence of infection would suppress the immune response and allow bacteria to multiply unchecked. Tobradex resolves both problems with a single drop.
Tobradex must only be used under medical supervision. It requires a valid prescription and should never be self-prescribed or used without confirmed diagnosis by a doctor or eye specialist.
What Are Tobradex Eye Drops Used For?
Tobradex Eye Drops are prescribed for:
- Bacterial conjunctivitis with inflammation — bacterial eye infection (آنکھ آنا) causing redness, discharge, and swelling where anti-inflammatory treatment is also needed
- Post-operative eye inflammation — controlling inflammation following eye surgery (cataract, corneal procedures) where infection risk is present
- Blepharokeratoconjunctivitis — inflammatory conditions affecting the eyelids, cornea, and conjunctiva together with bacterial involvement
- Uveitis with secondary infection risk — inflammation of the middle layer of the eye where bacterial protection is required alongside steroid treatment
- Steroid-responsive ocular inflammation with infection risk — any inflammatory eye condition where the prescribing doctor has determined combined antibiotic-steroid therapy is appropriate
Tobradex is not for use in viral, fungal, or purely allergic eye conditions. Your doctor must confirm the correct diagnosis before prescribing.
How Do Tobradex Eye Drops Work?
Tobramycin 3mg/mL — Aminoglycoside Antibiotic: Tobramycin works by binding to bacterial ribosomes — the structures bacteria use to make proteins essential for their survival. By blocking this process, Tobramycin stops bacterial growth and kills the bacteria causing the infection. It has broad-spectrum activity against many gram-positive and gram-negative bacteria commonly responsible for eye infections, including Staphylococcus aureus, Streptococcus, Pseudomonas aeruginosa, and E. coli. Its activity is localised to the eye surface when applied as drops, minimising systemic absorption.
Dexamethasone 1mg/mL — Corticosteroid: Dexamethasone is a potent synthetic corticosteroid that suppresses the inflammatory response in the eye by blocking the production of prostaglandins and other inflammatory chemicals. It rapidly reduces redness, swelling, pain, and light sensitivity associated with ocular inflammation. In the context of Tobradex, Dexamethasone provides essential anti-inflammatory control while the Tobramycin component simultaneously protects against bacterial infection — a combination that would be unsafe with a steroid alone.
Combined Effect: By targeting infection and inflammation at the same time through two entirely different mechanisms, Tobradex achieves faster, more complete symptom relief than sequential treatment with separate products. The antibiotic coverage allows the steroid to be used safely in infection-prone situations.
Dosage and Administration
⚠️ Use exactly as prescribed by your doctor. Never use longer than prescribed. Never stop suddenly without medical advice. Shake the bottle well before each use — Tobradex is a suspension, not a clear solution.
| Indication | Dose | Frequency |
|---|---|---|
| Acute bacterial infection with inflammation | 1 – 2 drops | Every 4 – 6 hours |
| Severe inflammation (initial days) | 1 – 2 drops | Every 1 – 2 hours (doctor to taper) |
| Post-operative inflammation | 1 – 2 drops | As directed by eye surgeon |
How to Apply:
- Wash hands thoroughly before use
- Shake the bottle well before each application
- Tilt head back, pull lower eyelid down to form a pocket
- Apply 1 to 2 drops without touching the dropper tip to the eye or any surface
- Close eye gently for 1 to 2 minutes after application
- Replace cap firmly immediately after use
Active Ingredients
| Ingredient | Strength per mL | Role |
|---|---|---|
| Tobramycin | 3mg/mL | Aminoglycoside antibiotic — kills bacteria |
| Dexamethasone | 1mg/mL | Corticosteroid — reduces inflammation, swelling, redness |
Who Should NOT Use Tobradex Eye Drops?
Do not use Tobradex if you:
- Are allergic to Tobramycin, other aminoglycoside antibiotics, Dexamethasone, or any ingredient in this product
- Have a viral eye infection — including herpes simplex keratitis (steroid use in viral infection can cause serious damage)
- Have a fungal eye infection — corticosteroids worsen fungal infections
- Have tuberculosis of the eye
- Have untreated purulent (pus-forming) eye infection not covered by Tobramycin
- Are pregnant or breastfeeding — unless specifically prescribed by your doctor
Always consult your doctor before use if you have:
- A history of glaucoma or raised eye pressure — corticosteroids can raise intraocular pressure
- Cataracts — prolonged steroid use can worsen cataracts
- Thin cornea or previous corneal ulcer
- Diabetes — steroid eye drops can affect blood sugar management in diabetic patients
- Any history of hypersensitivity to aminoglycoside antibiotics
Side Effects
Common Side Effects:
- Temporary mild stinging or burning on application
- Mild blurring of vision immediately after use — clears with blinking
- Eye discomfort or foreign body sensation
Serious Side Effects — Stop Use and Seek Immediate Medical Attention:
- Raised intraocular pressure (glaucoma risk) — eye pain, halos around lights, headache — corticosteroids can raise eye pressure, particularly with prolonged use; regular pressure monitoring is required during treatment
- Cataract formation — prolonged corticosteroid eye drop use can accelerate cataract development
- Delayed healing / secondary infection — if symptoms worsen or new symptoms develop, Dexamethasone may be masking a worsening or secondary infection
- Severe allergic reaction — sudden redness, swelling of eyelids or face, difficulty breathing (یہ طبی ہنگامی صورتحال ہے)
- Corneal damage — prolonged use without monitoring can affect corneal integrity
Tobradex should never be used for longer than the prescribed course. Prolonged unsupervised use carries serious risk of glaucoma, cataract, and secondary infection.
Drug Interactions
| Medicine / Product | Possible Interaction |
|---|---|
| Other eye drops | Allow 5 to 10 minutes between different eye drop products |
| Systemic corticosteroids (e.g., Prednisolone tablets) | Combined steroid load increases risk of raised eye pressure and systemic steroid effects |
| Antiglaucoma eye drops | Dexamethasone may counteract their pressure-lowering effect — inform your eye doctor |
| Soft contact lenses | Do not wear contact lenses during treatment — remove before use |
| Other aminoglycoside antibiotics (systemic) | Increased risk of aminoglycoside-related side effects if used alongside systemic tobramycin or gentamicin |
Storage Instructions
- Store below 25°C in a cool, dry place
- Do not refrigerate or freeze
- Protect from direct sunlight
- Discard 4 weeks after first opening — even if solution remains
- Shake well before every use
- Keep out of reach of children (بچوں کی پہنچ سے دور رکھیں)
- Do not use after the expiry date on the bottle or carton
Frequently Asked Questions
Why does Tobradex contain both an antibiotic and a steroid — is that not dangerous?
The combination is specifically designed for situations where both infection and inflammation are present or where infection risk is high alongside inflammation. Using a steroid alone in an infected eye is genuinely dangerous — it suppresses the immune response and allows bacteria to multiply. The Tobramycin in Tobradex protects against this by simultaneously treating the bacterial infection, making it safe to use Dexamethasone in this context. This is why Tobradex must only be used when a doctor has confirmed this specific combination is appropriate for your diagnosis.
How long should I use Tobradex?
Tobradex is prescribed for short-term use only — typically 5 to 7 days, occasionally up to 14 days for post-operative cases under specialist supervision. Never extend the course without your doctor's explicit instruction. Prolonged unsupervised use of corticosteroid eye drops carries serious risks including raised eye pressure (glaucoma), cataract formation, and secondary fungal or viral infection.
Why do I need to shake Tobradex before use?
Tobradex is a suspension — meaning the active ingredients are suspended in liquid rather than fully dissolved. The ingredients naturally settle at the bottom of the bottle between uses. Without shaking, you may apply a dose that is too weak (mostly liquid) or too concentrated (mostly settled particles), making treatment inconsistent. Always shake well before every single application.
Can I use Tobradex for red or watery eyes without a prescription?
No. Tobradex is a prescription-only medication and should never be self-prescribed. Red or watery eyes have many possible causes — viral infection, allergy, or a dry eye condition — most of which would be made significantly worse by a corticosteroid-antibiotic combination. Incorrect use of Tobradex without proper diagnosis can mask serious eye conditions, worsen viral infections, and cause lasting damage. Always consult a doctor before using this product.
Can I wear contact lenses while using Tobradex?
No. Contact lenses should not be worn during Tobradex treatment. The preservative in the drops can be absorbed by soft lenses, and wearing lenses during an eye infection or inflammatory condition delays healing and increases infection risk.
⚕️ Medical Disclaimer: This product description is for general informational purposes only and does not replace professional medical advice. Tobradex is a prescription medication — always use under the supervision of a qualified doctor or eye specialist. Never self-prescribe corticosteroid-antibiotic eye drops. Discard 4 weeks after opening. If symptoms worsen at any point during treatment, consult your doctor immediately.
Prescription Required (Rx) | Shake Well Before Use | Discard 4 Weeks After Opening | Short-Term Use Only