Reported Aug 26, 2026 · Ongoing · Updated Sep 16, 2026

Libtayo (cemiplimab-rwlc) Injection, 350 mg/7 mL (50 mg/mL), For Intravenous Infusion After Dilution, Single-Dose Vial,…

Regeneron Pharmaceuticals Inc.

Moderate riskThis product could cause temporary or reversible health problems — stop using it.

What you should do

Stop using the affected lot and contact the recalling firm for the return or refund process. Check the FDA enforcement report for lot-level detail.

Firm contact: Regeneron Pharmaceuticals Inc · 777 Old Saw Mill River Rd · Tarrytown, NY · 10591-6717

Is this the product you have?

  • Libtayo (cemiplimab-rwlc) Injection, 350 mg/7 mL (50 mg/mL), For Intravenous Infusion After Dilution, Single-Dose Vial, Rx only
  • Manufactured byRegeneron Pharmaceuticals, Inc., Tarrytown, NY 10591
  • Marketed byRegeneron Pharmaceuticals, Inc. (Tarrytown, NY 10591), NDC 61755-008-01
Lot codes and dates
  • Lot
    • 8494000002
    • Exp 7/31/28
Amount recalled
21,353 vials

Where it was sold

  • Nationwide

Why it was recalled

Lack of Assurance of Sterility

This product could cause temporary or reversible health problems — stop using it.

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Where this came from

Source: U.S. Food & Drug Administration (Enforcement Report)

Read the FDA (weekly enforcement report) notice

Data as of Sep 19, 5:35 PM UTC

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