Natamycin Ophthalmic Suspension
Natacyn (natamycin) is a topical antifungal medication available as an ophthalmic suspension. It is primarily prescribed for treating fungal infections of the eye, particularly fungal keratitis. This brand-name medication is applied directly to the affected eye to combat various fungal organisms.
Natacyn is an antifungal eye medication used to treat fungal infections of the cornea and eye surface.
Key facts at a glance
- RxNorm
- 202743
- Generic
- Natacyn
- Class
- brand-name
- 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.
Natacyn is indicated for the treatment of fungal blepharitis, conjunctivitis, and keratitis caused by susceptible fungi including Fusarium, Aspergillus, Candida, and Cephalosporium species.
Natacyn contains natamycin, a polyene antifungal that binds to ergosterol in fungal cell membranes, disrupting membrane integrity and causing fungal cell death.
For ophthalmic use only; avoid contamination of the dropper tip. May cause temporary blurred vision after application. Contact lenses should be removed before use. Not for injection. Use with caution in patients with known hypersensitivity to natamycin or other polyene antifungals.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
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 July 26, 2026. · Read our editorial policy