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 III · Low risk

Levocetirizine Dihydrochloride Tablets

Failed Impurities/Degradation Specifications: One lot of Levocetirizine dihydrochloride tablets 5 mg 30 count failed stability testing.

Terminated Impurity / degradation InvaTech Pharma Solutions, LLC NDC 10135-0639-30 D-0115-2021
Class III · Low risk

Felodipine Extended Release Tablets

Failed impurities/ degradation specifications: Out of specification impurity results were observed during routine testing of stability samples for the impurity Felodipine Related compound A

Terminated Impurity / degradation Heritage Pharmaceuticals Inc NDC 23155-050-01 D-0108-2021
Class III · Low risk

Nystatin Oral Suspension

Failed Impurties/Degradation Specifications: out of specification results for an impurity for one lot

Terminated Impurity / degradation VistaPharm, Inc. NDC 66689-008-16 D-0019-2021
Class III · Low risk

Citalopram Oral Solution

Failed Impurities/Degradation Specifications; high out of specification results obtained at the 9 month stability timepoint

Terminated Impurity / degradation PAI Holdings, LLC. dba Pharmaceutical Associates Inc NDC 0121-1696-40 D-0015-2021
Class II · Moderate risk

Mibelas 24 Fe

Failed Impurities/Degradation Specifications: Out of specification result observed in related substance test.

Terminated Impurity / degradation Lupin Pharmaceuticals Inc. D-1502-2020
Class III · Low risk

Nystatin Oral Suspension

Failed impurities/degradation products; Presence of an impurity peak that exceeds the approved specification.

Terminated Impurity / degradation VistaPharm, Inc. NDC 66689-008-16 D-1378-2020
Class III · Low risk

Nystatin Oral Suspension

Failed impurities/degradation products; Presence of an impurity peak that exceeds the approved specification.

Terminated Impurity / degradation VistaPharm, Inc. NDC 66689-037-50 D-1377-2020
Class III · Low risk

Brimonidine Tartrate Opthalmic Solution 0.2%

Failed Impurities/Degradation Specification: There is a slow leaching process from the product label on the bottle which may impact the product over the shelf life.

Terminated Impurity / degradation Somerset Therapeutics LLC NDC 70069-233-01 D-1375-2020
Class III · Low risk

Brimonidine Tartrate Opthalmic Solution 0.2%

Failed Impurities/Degradation Specification: There is a slow leaching process from the product label on the bottle which may impact the product over the shelf life.

Terminated Impurity / degradation Somerset Therapeutics LLC NDC 70069-232-01 D-1374-2020
Class III · Low risk

Brimonidine Tartrate Opthalmic Solution 0.2%

Failed Impurities/Degradation Specification: There is a slow leaching process from the product label on the bottle which may impact the product over the shelf life.

Terminated Impurity / degradation Somerset Therapeutics LLC NDC 70069-231-01 D-1373-2020
Class III · Low risk

Clonidine Hydrochloride Tablets

Failed Impurities/Degradation Specifications: potential migration of benzophenone at very low level into the product from container.

Terminated Impurity / degradation Unichem Pharmaceuticals USA INC NDC 29300-135-01 D-1291-2020
Class II · Moderate risk

Estriol USP Micronized 5 G

Failed impurities/ degradation specifications: Out of specification for organic impurities.

Terminated Impurity / degradation Triova Pharmaceuticals LLC NDC 71092-9977-02 D-1284-2020
Class III · Low risk

Gabapentin Tablets USP

Failed Impurities/Degradation Specifications; failure of Impurity A test at the 12-month long-term stability testing.

Terminated Impurity / degradation InvaGen Pharmaceuticals, Inc. NDC 76282-405-05 D-1272-2020
Class II · Moderate risk

Glycopyrrolate Tablets

Failed Impurities/Degradation Specification: Presence of unknown impurity observed.

Terminated Impurity / degradation Par Pharmaceutical Inc. NDC 49884-0065-01 D-1071-2020
Class III · Low risk

Fentanyl Citrate Injection

Failed impurities/degradation specification: Out-of-Specification result for total impurity at 4.1% (Limit: NMT 3.0%) during retained sample testing.

Terminated Impurity / degradation Akorn Inc NDC 17478-030-02 D-1258-2020
Class III · Low risk

Zoledronic Acid Injection 5 mg/100 mL

Failed Impurities/Degradation Specifications: Out-of-specification results obtained for impurities during stability testing.

Terminated Impurity / degradation Breckenridge Pharmaceutical, Inc NDC 51991-064-98 D-1063-2020
Class III · Low risk

Glycopyrrolate Injection

Failed Impurities/Degradation Specifications: elevated levels of Benzaldehyde impurity was found in investigative samples (retain samples).

Terminated Impurity / degradation AuroMedics Pharma LLC NDC 55150-295-20 D-0853-2020
Class III · Low risk

Clonidine Hydrochloride Tablets

Failed Impurities/Degredation Specifications: This recall is initiated as a precautionary measure due to potential migration of Benzophenone at very low level into product from container label.

Terminated Impurity / degradation Unichem Pharmaceuticals USA INC NDC 29300-135-01 D-0829-2020