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Prescription medicine

Natamycin

Drug class: Polyene Antimicrobial

The FDA’s “Established Pharmacologic Class”: the group of medicines that work in a similar way.

Official FDA data, not advice

Everything here comes from the U.S. Food and Drug Administration (FDA): the drug label, the NDC Directory, Drugs@FDA, recall reports and the drug shortage list. Each fact shows its source and date.

This page is not medical advice. Talk to your doctor or pharmacist before you start, stop or change any medicine.

In an emergency, call 911. If someone may have taken too much of a medicine, call Poison Help: 1‑800‑222‑1222.

Quick answers

What is Natamycin used for?
The FDA-approved label (Natacyn, Eyevance Pharmaceuticals, LLC, November 5, 2025) says: “NATACYN ® (natamycin ophthalmic suspension) 5% is indicated for the treatment of fungal blepharitis, conjunctivitis, and keratitis caused by susceptible organisms including Fusarium solani keratitis. …” This page is not medical advice. Talk to your doctor or pharmacist before you start, stop or change any medicine.
Does Natamycin have a boxed warning?
No. None of the 2 FDA labels we found for this medicine has a boxed warning.
Is there a shortage of Natamycin?
No current shortage is listed by the FDA for the products of this medicine (FDA data from October 30, 2026).
Has Natamycin been recalled?
No recall linked to the products of this medicine appears in the FDA enforcement reports we use.
Who makes Natamycin?
2 companies list prescription products of Natamycin in the FDA NDC Directory, including Harrow Eye, LLC and Eyevance Pharmaceuticals, LLC.

What Natamycin is used for

Quoted from the “Indications and Usage” section of the FDA-approved label.

NATACYN ® (natamycin ophthalmic suspension) 5% is indicated for the treatment of fungal blepharitis, conjunctivitis, and keratitis caused by susceptible organisms including Fusarium solani keratitis. …

— FDA label: Natacyn, Eyevance Pharmaceuticals, LLC, effective November 5, 2025. Read the full label on DailyMed →

The FDA has 2 labels for products of this medicine (different makers and forms); uses can differ between them. Check the label that comes with your own medicine.

This page is not medical advice. Talk to your doctor or pharmacist before you start, stop or change any medicine.

Boxed warning

A boxed warning (“black box”) is the FDA’s strongest warning on a drug label, for serious or life-threatening risks.

The label quoted above has no boxed warning.

0 of 2 FDA labels for this medicine have a boxed warning.

Forms and how it is given

Dosage formsSuspension/ drops
RouteOphthalmic
Prescription products2 in the FDA NDC Directory
Brand namesNatacyn

Companies that list this medicine

Labelers in the FDA NDC Directory: the company named on the package (maker or distributor), with the number of prescription products.

FDA approval history

  • NDA: New Drug Application: how a new (usually brand-name) medicine is approved.
Brand and biologic applications
ApplicationSponsorApprovedLater changes approved
NDA050514
NATACYN
Harrow EyeOctober 30, 1978 9, latest November 17, 2025
2025: Labeling · 2008: Labeling · 2002: Manufacturing (CMC)

Shortage status

The FDA drug shortage list does not show these products.

FDA Drug Shortages database →

Recalls

No recall linked to these products (by their NDC code) appears in the FDA enforcement reports.

Official identifiers

RxCUI (RxNorm)204451, 207100
SPL set ID of the quoted label2818fcb8-5bac-41fb-864e-3b598308a428
FDA labels (SPL)2
FDA applicationsNDA050514
Active ingredients (FDA)NATAMYCIN

Sources

  1. FDA-approved label on DailyMed (National Library of Medicine) — Natacyn, Eyevance Pharmaceuticals, LLC, effective November 5, 2025; via openFDA, FDA data exported October 30, 2026, retrieved October 31, 2026
  2. NDC Directory (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 30, 2026, retrieved October 31, 2026
  3. Drugs@FDA (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 30, 2026, retrieved October 31, 2026
  4. Drug recall enforcement reports (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 27, 2026, retrieved October 31, 2026
  5. Drug shortages (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 30, 2026, retrieved October 31, 2026

openFDA data is provided by the FDA as is; it may be incomplete. Always rely on the label that comes with your medicine. FDA Enforcement Report search →

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