Independent register of U.S. FDA drug recalls · updated Oct 10, 2026
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Impurities & degradation products

An impurity or degradation product above its limit - other than nitrosamines. Unexpected substances in a batch can make it unsafe or less effective, even when the active ingredient is present.

704 FDA drug recalls with this cause, newest first.

Every drug has a specification for how much of each impurity or breakdown product it may contain. These recalls are lots that exceeded one of those limits - often a related compound formed during manufacturing or storage, or an out-of-specification result found during routine stability testing. Nitrosamine impurities are common enough to get their own category; everything else lands here.

Class II · Moderate risk

Bumetanide Tablets

Failed impurities/ degradation specifications: Product is Out of Specification for an unspecified degradation product.

Terminated Impurity / degradation Upsher Smith Laboratories, Inc. NDC 0832-0542-11 D-0281-2019
Class II · Moderate risk

Bumetanide Tablets

Failed impurities/ degradation specifications: Product is Out of Specification for an unspecified degradation product.

Terminated Impurity / degradation Upsher Smith Laboratories, Inc. NDC 0832-0541-11 D-0280-2019
Class III · Low risk

Bupropion Hydrochloride ER Tablets

Failed impurities/ degradation specifications: Out-of-specification results were observed in the meta-chlorobenzoic acid impurity in batches 18 months or older from date of manufacture in the 90 count bottle size.

Terminated Impurity / degradation InvaGen Pharmaceuticals, Inc. NDC 69097-875-05 D-1212-2018
Class III · Low risk

Argatroban Injection

Failed Impurities/Degradation Specifications; Out of specification stability testing results at the 18 month time point

Terminated Impurity / degradation Pfizer Inc. D-1184-2018
Class II · Moderate risk

Ethosuximide Capsules

Failed Impurities/Degradation Specifications: Out of specification (OOS) results for unspecified impurity.

Terminated Impurity / degradation Akorn, Inc. D-1183-2018
Class III · Low risk

Morphine Sulfate Extended-Release Tablets

Failed Impurities/Degradation Specifications: Morphine Sulfate Extended Release Tablets are being recalled due to out of Specification Result noticed for Morphinone Sulfate impurity during 3 month stability analysis and during retain testing.

Terminated Impurity / degradation Lupin Somerset NDC 43386-541-01 D-1214-2018
Class III · Low risk

Diltiazem HCl Extended-release Capsules

Failed Impurities/Degradation Specifications; out of specification results for related compound per the manufacturer

Terminated Impurity / degradation Mylan Institutional, Inc. (d.b.a. UDL Laboratories) NDC 51079-947-08 D-1112-2018
Class III · Low risk

Diltiazem HCl Extended-Release Capsules

Failed Impurities/Degradation Specifications: Out of specification test results obtained during routine stability testing for related compound.

Terminated Impurity / degradation Mylan Pharmaceuticals Inc. NDC 0378-5220-05 D-1187-2018
Class III · Low risk

Diltiazem HCl Extended-Release Capsules

Failed Impurities/Degradation Specifications: Out of specification test results obtained during routine stability testing for related compound.

Terminated Impurity / degradation Mylan Pharmaceuticals Inc. NDC 0378-5220-01 D-1186-2018
Class III · Low risk

Atorvastatin Calcium tablets

Failed Impurities/Degradation Specifications - OOS was observed for ATV Cyclo FP Impurity and Total Degradation Impurities tested at the 18 month stability time point in Atorvastatin Calcium Tablets 40 mg 500 tablets.

Terminated Impurity / degradation Dr. Reddy's Laboratories, Inc. NDC 55111-123-05 D-1079-2018
Class II · Moderate risk

Lidocaine 2.5% and Prilocaine Cream

Failed Impurities/Degredation Specifications: Out of Specification results for an unknown impurity was found during routine stability testing at 12 months.

Terminated Impurity / degradation Akorn, Inc. NDC 50383-667-30 D-1046-2018
Class III · Low risk

Moxifloxacin Ophthalmic Solution USP

Failed Impurities/Degradation Specifications: An out-of-specification result in the related substance test during three month long-term stability study.

Terminated Impurity / degradation Lupin Pharmaceuticals Inc. NDC 68180-422-01 D-1050-2018
Class II · Moderate risk

Fluocinolone Acetonide Topical Solution

Failed Impurities and Degradation Specifications and Subpotent Drug: out-of-specification (OOS) test results for below assay and above specification for degradants.

Terminated Impurity / degradation Teva Pharmaceuticals USA NDC 0591-2990-60 D-0909-2018
Class III · Low risk

Enalapril Maleate

Out-of-specification results for the Enalapril Diketopiperazine degradation product during commercial stability.

Terminated Impurity / degradation Aidarex Pharmaceuticals LLC D-0992-2018
Class III · Low risk

Enalapril Maleate

Out-of-specification results for the Enalapril Diketopiperazine degradation product during commercial stability.

Terminated Impurity / degradation Aidarex Pharmaceuticals LLC D-0991-2018
Class III · Low risk

Enalapril Maleate

Out-of-specification results for the Enalapril Diketopiperazine degradation product during commercial stability.

Terminated Impurity / degradation Aidarex Pharmaceuticals LLC D-0990-2018
Class III · Low risk

Enalapril Maleate Tablets

Failed Impurities/Degradation Specifications: Sub-recall because this repackaged product was recalled by the manufacturing firm, Wockhardt, due to out-of-specification results for the Enalapril DiKetopiperazine degradation product.

Terminated Impurity / degradation Major Pharmaceuticals NDC 0904-5502-61 D-0980-2018
Class III · Low risk

Enalapril Maleate Tablets

Failed Impurities/Degradation Specifications: Sub-recall because this repackaged product was recalled by the manufacturing firm, Wockhardt, due to out-of-specification results for the Enalapril DiKetopiperazine degradation product.

Terminated Impurity / degradation Major Pharmaceuticals NDC 0904-5609-61 D-0979-2018
Class III · Low risk

Enalapril Maleate Tablets USP

Failed Impurities/Degradation Specification; out-of-specification results for the Enalapril DKT degradant

Terminated Impurity / degradation American Health Packaging NDC 68084-390-01 D-0915-2018