Independent register of U.S. FDA drug recalls · updated Oct 10, 2026
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Class II · Moderate risk Ongoing Initiated May 29, 2013 (13 years ago)

Diphenhydramine 50 mg/ml Injection

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

Why it was recalled

Lack of Assurance of Sterility: FDA inspection findings resulted in concerns regarding quality control processes

Cause type: Sterility / contamination

A product that must be sterile could not be assured sterile, or was contaminated. A top reason for injectables, eye drops and IV products - loss of sterility assurance can lead to serious infections. All sterility / contamination recalls.

What was recalled

Diphenhydramine 50 mg/ml Injection, compounded by Olympia Pharmacy, Orlando, FL

Drug: Diphenhydramine Category: Allergy & Cold Medication

Recalling firm
Lowlite Investments, Inc. D/B/A Olympia Pharmacy
Origin
FL, United States
Initiated by
Voluntary: Firm initiated
FDA recall number
D-723-2013 · 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.

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 Lowlite Investments, Inc. D/B/A Olympia Pharmacy

All 2013 recalls
Class II · Moderate risk

Yohimbine 10 mg/ml Injection

Lack of Assurance of Sterility: FDA inspection findings resulted in concerns regarding quality control processes

Ongoing Sterility / contamination Lowlite Investments, Inc. D/B/A Olympia Pharmacy D-796-2013
Class II · Moderate risk

Xylazine 300 mg/ml Injection

Lack of Assurance of Sterility: FDA inspection findings resulted in concerns regarding quality control processes

Ongoing Sterility / contamination Lowlite Investments, Inc. D/B/A Olympia Pharmacy D-795-2013
Class II · Moderate risk

Vitamin B-Buildup Injection

Lack of Assurance of Sterility: FDA inspection findings resulted in concerns regarding quality control processes

Ongoing Sterility / contamination Lowlite Investments, Inc. D/B/A Olympia Pharmacy D-793-2013