Reported Mar 19, 2025 · Ongoing

Unisom, SleepMelts, Diphenhydramine HCl tablets, 25 mg, Nighttime Sleep-Aid, 4 x 8 blister packs per carton, Cherry…

Chattem 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: Chattem Inc · 1715 W 38th St · Chattanooga, TN · 37409-1248

Is this the product you have?

  • Unisom, SleepMelts, Diphenhydramine HCl tablets, 25 mg, Nighttime Sleep-Aid, 4 x 8 blister packs per carton, Cherry flavor, Manufactured by Adare Pharmaceuticals, Inc., Dist. by Chattem, Inc., P.O. Box 2219, Chattanooga, TN 37409, UPC # 0 41167 0014 0
Lot codes and dates
  • Lot# 252807
  • Exp
    • 5/31/2025
    • 252808
  • Exp
    • 6/30/2025
    • 372560
  • Exp
    • 11/30/2025
    • 489576
    • 493447
  • Exp4/30/2026
Amount recalled
180,696 cartons

Where it was sold

  • Nationwide

Why it was recalled

CGMP Deviations: Nitrosamine Drug Substance Related Issue impurity above the daily acceptable intake limit defined by the Food and Drug Administration.

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 (openFDA)

Read the FDA (openFDA drug enforcement) notice

Data as of Sep 19, 8:08 PM UTC

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