Benzalkonium / Idoxuridine
Benzalkonium/Idoxuridine is a combination ophthalmic medication used to treat herpes simplex virus infections of the eye, particularly keratitis. Idoxuridine works as an antiviral by inhibiting viral DNA synthesis, while benzalkonium chloride acts as a preservative in the formulation. This medication is typically prescribed for topical eye use under medical supervision.
An ophthalmic antiviral combination medication used to treat herpes simplex eye infections.
Key facts at a glance
- RxNorm
- 1008664
- Generic
- Benzalkonium / Idoxuridine
- Class
- multi-ingredient
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Treatment of herpes simplex keratitis (inflammation of the cornea caused by herpes simplex virus). Primarily used for superficial eye infections and may be employed in both initial episodes and recurrent outbreaks under physician guidance.
Idoxuridine is a thymidine analog that interferes with viral DNA synthesis by being incorporated into the viral DNA chain, preventing proper replication. Benzalkonium chloride serves as an antimicrobial preservative in the formulation to maintain sterility during use.
For ophthalmic use only; avoid contamination of the dropper tip. May cause temporary stinging, burning, or blurred vision upon application. Should not be used for extended periods as resistance may develop. Contraindicated in patients with known hypersensitivity to any components. Pregnant or breastfeeding patients should consult a physician before use.
Official drug label
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This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and 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 local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 28, 2026. · Read our editorial policy