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
Diphenhydramine HCl oral solution (Diphenhydramine Hydrochloride)
Class II — Moderate risk. May cause temporary or reversible harm; serious harm unlikely.
Why it was recalled
cGMP deviations: Temperature abuse
Cause type: Temperature excursion
The product was stored or shipped outside its labeled temperature range. Heat or freezing can degrade a drug without any visible change, so it may be weaker than labeled. All temperature excursion recalls.
What was recalled
Diphenhydramine HCl oral solution, USP, 25 mg/10 mL UD, packaged in a) 10 mL unit dose cups (NDC 0121-0978-10), b) 100-count box (NDC 0121-0978-00), Rx only, MFG: Pharmaceutical Associates Inc.
Affected NDCs
0121-0978-00
0121-0978-10
Compare with the code on your package — it is the most precise check available.
Drug: Diphenhydramine Category: Allergy & Cold Medication
Product details
From the FDA NDC directory, for the product code this recall names. Compare with the label on your package.
| Product | Strength | Form & route | Labeler | Type |
|---|---|---|---|---|
| Diphenhydramine Hydrochloride NDC 00121-0978 |
25 mg/10mL | Solution Oral |
PAI Holdings, LLC dba PAI Pharma | Rx |
- Recalling firm
- Mckesson Medical-Surgical Inc. Corporate Office
- NDC code
- 0121-0978-10
- Origin
- VA, United States
- Initiated by
- Voluntary: Firm initiated
- FDA recall number
- D-1101-2022 · 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: Nitrosamine Drug Substance Related Issue impurity above the daily acceptable intake limit defined by the Food and Drug Administration.
Class III · Low risk
Diphenhydramine HCl 50 mg
Labeling: Not Elsewhere Classified: Tablets/Capsules imprinted with wrong ID.
Class III · Low risk
Diphenhydramine HCl 25 mg
Labeling: Not Elsewhere Classified: Tablets/Capsules imprinted with wrong ID.
Class III · Low risk
Diphenhydramine HCl 25 mg
Labeling: Not Elsewhere Classified: Tablets/Capsules imprinted with wrong ID.
Other recalls by Mckesson Medical-Surgical Inc. Corporate Office
All 2022 recalls
Class II · Moderate risk
Infuvite Adult
Severe thunderstorms caused transit delays of certain cold chain products that were shipped on 02-Apr-2025 and delivered after the 48-hours specified delivery time, on 07-Apr-2025 and 08-Apr-2025. The affected products may not have been stored at the recommended labeled storage conditions which may have impacted the safety, quality, identity, potency and purity of the product.
Class II · Moderate risk
Medroxyprogesterone Acetate Injectable Suspension
Severe thunderstorms caused transit delays of certain cold chain products that were shipped on 02-Apr-2025 and delivered after the 48-hours specified delivery time, on 07-Apr-2025 and 08-Apr-2025. The affected products may not have been stored at the recommended labeled storage conditions which may have impacted the safety, quality, identity, potency and purity of the product.
Class II · Moderate risk
BENLYSTA (belimumab)
CGMP Deviations; potential temperature excursions due to transit delays
Class II · Moderate risk
Evenity
CGMP Deviations; potential temperature excursions due to transit delays
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