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

Paricalcitol Capsules

Failed Impurities/Degradation Specifications: This repackaged product was recalled by its manufacturer due to failed results for impurities.

Terminated Impurity / degradation Amerisource Health Services NDC 60687-106-25 D-0009-2017
Class III · Low risk

Clonazepam Tablets

Failed Impurities/Degradation Specifications: out of specification result for Clonazepam Related Compound (RC) A (a known impurity) at 16 month timepoint.

Terminated Impurity / degradation Mylan Institutional, Inc. (d.b.a. UDL Laboratories) NDC 51079-882-20 D-0136-2017
Class III · Low risk

Clonazepam Tablets

Failed Impurities/Degradation Specifications: out of specification result for Clonazepam Related Compound (RC) A (a known impurity) at 15 month timepoint.

Terminated Impurity / degradation Mylan Institutional, Inc. (d.b.a. UDL Laboratories) NDC 51079-881-20 D-0135-2017
Class III · Low risk

PARICALCITOL Capsules

Failed Impurities/Degradation Specifications: out of specification test results for impurities during stability testing.

Terminated Impurity / degradation Teva Pharmaceuticals USA NDC 0093-7658-56 D-0111-2017
Class III · Low risk

PARICALCITOL Capsules

Failed Impurities/Degradation Specifications: out of specification test results for impurities during stability testing.

Terminated Impurity / degradation Teva Pharmaceuticals USA NDC 0093-7657-56 D-0110-2017
Class III · Low risk

PARICALCITOL Capsules

Failed Impurities/Degradation Specifications: out of specification test results for impurities during stability testing.

Terminated Impurity / degradation Teva Pharmaceuticals USA NDC 0093-7656-56 D-0109-2017
Class III · Low risk

mitoXANTRONE Injection USP

Failed Impurities/Degradation Specifications: potential failure to meet the specification for Impurity D throughout shelf-life.

Terminated Impurity / degradation Teva Pharmaceuticals USA NDC 0703-4685-01 D-0095-2017
Class III · Low risk

Cytotec (misoprostol)

Failed Impurities/Degradations Specifications; Out of specification results for two known degradation products and total impurities at 18 months

Terminated Impurity / degradation Pfizer Inc. NDC 0025-1461-34 D-0424-2017
Class III · Low risk

Hydrocortisone and acetic acid otic solution

Failed Impurities/Degradation Specifications: Out of specification (OOS) results for related compound G were obtained at 12-month (at expiry) stability time-point for room temperature sample(s).

Terminated Impurity / degradation Actavis Inc NDC 45963-412-61 D-1472-2016
Class III · Low risk

Acetasol HC

Failed Impurities/Degradation Specifications: Out of specification (OOS) results for related compound G were obtained at 12-month (at expiry) stability time-point for room temperature sample(s).

Terminated Impurity / degradation Actavis Inc NDC 0472-0882-82 D-1471-2016
Class III · Low risk

Desoximetasone Gel USP

Failed impurities/degradation specifications: product was out of specification for unknown impurity at the 9 month stability time point

Terminated Impurity / degradation Akorn, Inc. NDC 61748-205-60 D-1469-2016
Class III · Low risk

Carvediol Tablets

Failed Impurities/Degradation Specifications

Terminated Impurity / degradation Sun Pharmaceutical Industries, Inc. NDC 57664-247-88 D-1507-2016
Class III · Low risk

Carvediol Tablets

Failed Impurities/Degradation Specifications

Terminated Impurity / degradation Sun Pharmaceutical Industries, Inc. NDC 57664-245-13 D-1506-2016
Class III · Low risk

Carvediol Tablets

Failed Impurities/Degradation Specifications

Terminated Impurity / degradation Sun Pharmaceutical Industries, Inc. NDC 57664-244-18 D-1505-2016
Class III · Low risk

Carvediol Tablets

Failed Impurities/Degradation Specifications

Terminated Impurity / degradation Sun Pharmaceutical Industries, Inc. NDC 57664-242-88 D-1504-2016
Class III · Low risk

Sirolimus Tablets

Failed impurities/degradation: out of specification result for impurity secorapamycin.

Terminated Impurity / degradation Dr. Reddy's Laboratories, Inc. NDC 55111-653-01 D-1063-2016
Class III · Low risk

mitoXANTRONE Injection USP

Failed Impurities/Degradation Specifications: High out of specification results for Impurity D.

Terminated Impurity / degradation Teva North America NDC 0703-4685-01 D-1451-2016
Class III · Low risk

Pramipexole Dihydrochloride Extended Release Tablets

Failed Impurities/Degradation Specifications: Par Pharmaceutical is recalling Pramipexole Dihydrochloride Extended Release tablets because it contains a known product impurity above currently approved specification levels.

Terminated Impurity / degradation Par Pharmaceutical NDC 10370-251-11 D-1038-2016
Class III · Low risk

Oxycodone HCl

Failed Impurities/Degradation Specification; 9 month stability

Terminated Impurity / degradation West-Ward Columbus Inc NDC 0054-0390-41 D-1441-2016
Class II · Moderate risk

Bromocriptine Mesylate Capsules USP

Failed impurities/degradation specifications: Out of specification results noticed in related substance test during analysis of 24 months long term (25 degree Celsius /65% RH) stability samples of two batches.

Terminated Impurity / degradation Zydus Pharmaceuticals USA Inc NDC 68382-110-06 D-1491-2016
Class III · Low risk

Dicloxacillin Sodium Capsules

Failed Impurities/Degradation Specifications:Out of specification result for a known impurity obtained during testing.

Terminated Impurity / degradation Sandoz, Inc NDC 0781-2248-01 D-1045-2016