Independent register of U.S. FDA drug recalls · updated Oct 10, 2026
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Class II · Moderate risk Terminated Initiated May 21, 2019 (7 years ago)

Diphenhist Oral Solution

Class II — Moderate risk. May cause temporary or reversible harm; serious harm unlikely.

Why it was recalled

cGMP Deviations: Potential product contamination with Burkholderia cepacia (B.cepacia) and Ralstonia pickettii (R. pickettii).

Cause type: Microbial contamination

Bacteria, mold, yeast or other microorganisms detected in the product. Contamination can occur from water systems, equipment or handling, and can cause infection. All microbial contamination recalls.

What was recalled

Diphenhist Oral Solution (Diphenhydramine HCl, USP), 12.5 mg/5 mL, a) 4 FL. oz. (118 mL) bottle, NDC: 0536-0770-97, b) One Pint (473 mL) bottle., NDC: 0536-0770-85, Distributed by Rugby Laboratories, Livonia, MI 48152.

Affected NDCs 0536-0770-85 0536-0770-97

Compare with the code on your package — it is the most precise check available.

Drug: Diphenhydramine Category: Allergy & Cold Medication

Recalling firm
Torrent Pharma Inc
Origin
PA, United States
Initiated by
Voluntary: Firm initiated
FDA recall number
D-1370-2019 · FDA notice

Check, then ask. Class II means harm is possible but usually temporary or reversible. Find the lot number on your package; if it matches, ask your pharmacist about a replacement. Do not simply stop a prescribed medication on your own - the gap can be riskier than the recall. This recall is now terminated, which means the firm has finished removing the affected product; anything on pharmacy shelves today should be unaffected.

Other Diphenhydramine recalls

See all
Class II · Moderate risk

Unisom

CGMP Deviations; detection of Nitrosamine Drug Substance-Related Impurities (NDSRI), N-nitroso-desmethyl-diphenhydramine (n-dph), above the FDA Recommended Intake Limit

Ongoing Nitrosamine impurity Chattem Inc D-0362-2025
Class II · Moderate risk

Unisom

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

Ongoing Nitrosamine impurity Chattem Inc D-0266-2025
Class III · Low risk

Diphenhydramine HCl 50 mg

Labeling: Not Elsewhere Classified: Tablets/Capsules imprinted with wrong ID.

Ongoing Labeling / mix-up Akron Pharma, Inc. NDC 71399-8026-02 D-0199-2025
Class III · Low risk

Diphenhydramine HCl 25 mg

Labeling: Not Elsewhere Classified: Tablets/Capsules imprinted with wrong ID.

Ongoing Labeling / mix-up Akron Pharma, Inc. NDC 71399-8028-2 D-0198-2025
Class III · Low risk

Diphenhydramine HCl 25 mg

Labeling: Not Elsewhere Classified: Tablets/Capsules imprinted with wrong ID.

Ongoing Labeling / mix-up Akron Pharma, Inc. NDC 71399-8028-1 D-0197-2025

Other recalls by Torrent Pharma Inc

All 2019 recalls
Class II · Moderate risk

Fluoxetine Tablets

CGMP Deviations: Presence of N-Nitroso Fluoxetine exceeding interim acceptable intake limit.

Completed Nitrosamine impurity Torrent Pharma Inc. D-0456-2025
Class II · Moderate risk

Fluoxetine Tablets

CGMP Deviations: Presence of N-Nitroso Fluoxetine exceeding interim acceptable intake limit.

Completed Nitrosamine impurity Torrent Pharma Inc. D-0455-2025