Independent register of U.S. FDA drug recalls · updated Oct 10, 2026
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Nitrosamine impurities (NDMA/NDEA)

Trace nitrosamine impurities such as NDMA, NDEA or NMBA found above the acceptable daily limit. Nitrosamines are probable human carcinogens that can form during manufacturing or storage. This is the cause behind the large valsartan, losartan and ranitidine (Zantac) recalls.

568 FDA drug recalls with this cause, newest first.

Nitrosamine compounds such as NDMA, NDEA or NMBA are probable human carcinogens that can form during manufacturing or storage. Recalls here trace back to a nitrosamine found above the accepted limit - whether the report names the compound or simply calls it a 'carcinogenic impurity'. It is a newer category, driven by improved testing methods that can now detect impurities that were previously missed, and it is the chemistry behind the large valsartan, losartan and ranitidine (Zantac) recalls.

Class II · Moderate risk

clomiPRAMINE Hydrochloride

cGMP deviations: an observed Out of Specification of Nitrosamine Drug Substance-Related Impurities (NDSRIs), N-Nitroso Desmethyl-Clomipramine, above the FDA acceptable intake limit.

Ongoing Nitrosamine impurity Zydus Pharmaceuticals (USA) Inc NDC 16714-851-01 D-0154-2026
Class II · Moderate risk

clomiPRAMINE Hydrochloride

cGMP deviations: an observed Out of Specification of Nitrosamine Drug Substance-Related Impurities (NDSRIs), N-Nitroso Desmethyl-Clomipramine, above the FDA acceptable intake limit.

Ongoing Nitrosamine impurity Zydus Pharmaceuticals (USA) Inc NDC 16714-850-01 D-0153-2026
Class II · Moderate risk

clomiPRAMINE Hydrochloride

cGMP deviations: an observed Out of Specification of Nitrosamine Drug Substance-Related Impurities (NDSRIs), N-Nitroso Desmethyl-Clomipramine, above the FDA acceptable intake limit.

Ongoing Nitrosamine impurity Zydus Pharmaceuticals (USA) Inc NDC 16714-849-01 D-0152-2026
Class II · Moderate risk

Prazosin Hydrochloride

Failed Impurities/Degradation Specification: presence of N-nitroso Prazosin impurity C above the Carcinogenic Potency Categorization Approach (CPCA) acceptable intake limit

Ongoing Nitrosamine impurity Amerisource Health Services LLC NDC 60687-572-32 D-0103-2026
Class II · Moderate risk

Prazosin Hydrochloride

Failed Impurities/Degradation Specification: presence of N-nitroso Prazosin impurity C above the Carcinogenic Potency Categorization Approach (CPCA) acceptable intake limit

Ongoing Nitrosamine impurity Amerisource Health Services LLC NDC 68084-997-01 D-0102-2026
Class II · Moderate risk

Prazosin Hydrochloride

Failed Impurities/Degradation Specification: presence of N-nitroso Prazosin impurity C above the Carcinogenic Potency Categorization Approach (CPCA) acceptable intake limit

Ongoing Nitrosamine impurity Amerisource Health Services LLC NDC 68084-996-01 D-0101-2026
Class II · Moderate risk

Prazosin Hydrochloride

CGMP Deviations-Test results for N-nitroso Prazosin impurity C that are above the Carcinogenic Potency Categorization Approach (CPCA) acceptable intake limit for the above specified lots.

Ongoing Nitrosamine impurity Teva Pharmaceuticals USA, Inc NDC 0093-4069-01 D-0106-2026
Class II · Moderate risk

Prazosin Hydrochloride

CGMP Deviations-Test results for N-nitroso Prazosin impurity C that are above the Carcinogenic Potency Categorization Approach (CPCA) acceptable intake limit for the above specified lots.

Ongoing Nitrosamine impurity Teva Pharmaceuticals USA, Inc NDC 0093-4068-01 D-0105-2026
Class II · Moderate risk

Prazosin Hydrochloride

CGMP Deviations-Test results for N-nitroso Prazosin impurity C that are above the Carcinogenic Potency Categorization Approach (CPCA) acceptable intake limit for the above specified lots.

Ongoing Nitrosamine impurity Teva Pharmaceuticals USA, Inc NDC 0093-4067-01 D-0104-2026
Class II · Moderate risk

Desipramine Hydrochloride Tablets

CGMP Deviations: N-Nitroso Desipramine impurity exceeding the permissible acceptable daily intake level.

Ongoing Nitrosamine impurity Heritage Pharmaceuticals Inc NDC 23155-583-25 D-0112-2026
Class II · Moderate risk

Desipramine Hydrochloride Tablets

CGMP Deviations: N-Nitroso Desipramine impurity exceeding the permissible acceptable daily intake level.

Ongoing Nitrosamine impurity Heritage Pharmaceuticals Inc NDC 23155-582-01 D-0111-2026
Class II · Moderate risk

Desipramine Hydrochloride Tablets

CGMP Deviations: N-Nitroso Desipramine impurity exceeding the permissible acceptable daily intake level.

Ongoing Nitrosamine impurity Heritage Pharmaceuticals Inc NDC 23155-581-01 D-0110-2026
Class II · Moderate risk

Desipramine Hydrochloride Tablets

CGMP Deviations: N-Nitroso Desipramine impurity exceeding the permissible acceptable daily intake level.

Ongoing Nitrosamine impurity Heritage Pharmaceuticals Inc NDC 23155-580-01 D-0109-2026
Class II · Moderate risk

Desipramine Hydrochloride Tablets

CGMP Deviations: N-Nitroso Desipramine impurity exceeding the permissible acceptable daily intake level.

Ongoing Nitrosamine impurity Heritage Pharmaceuticals Inc NDC 23155-579-01 D-0108-2026
Class II · Moderate risk

Desipramine Hydrochloride Tablets

CGMP Deviations: N-Nitroso Desipramine impurity exceeding the permissible acceptable daily intake level.

Ongoing Nitrosamine impurity Heritage Pharmaceuticals Inc NDC 23155-578-01 D-0107-2026
Class II · Moderate risk

Major ChlorproMAZINE Hydrochloride Tablets

CGMP Deviations: Presence of N-Nitroso Desmethyl Chlorpromazine above the recommended intake limit

Ongoing Nitrosamine impurity The Harvard Drug Group LLC dba Major Pharmaceuticals and Rugby Laboratories NDC 0904-7133-61 D-0013-2026
Class II · Moderate risk

Major ChlorproMAZINE Hydrochloride Tablets

CGMP Deviations: Presence of N-Nitroso Desmethyl Chlorpromazine above the recommended intake limit

Ongoing Nitrosamine impurity The Harvard Drug Group LLC dba Major Pharmaceuticals and Rugby Laboratories NDC 0904-7132-61 D-0012-2026
Class II · Moderate risk

Major ChlorproMAZINE Hydrochloride Tablets

CGMP Deviations: Presence of N-Nitroso Desmethyl Chlorpromazine above the recommended intake limit

Ongoing Nitrosamine impurity The Harvard Drug Group LLC dba Major Pharmaceuticals and Rugby Laboratories NDC 0904-7131-61 D-0011-2026
Class II · Moderate risk

Major ChlorproMAZINE Hydrochloride Tablets

CGMP Deviations: Presence of N-Nitroso Desmethyl Chlorpromazine above the recommended intake limit

Ongoing Nitrosamine impurity The Harvard Drug Group LLC dba Major Pharmaceuticals and Rugby Laboratories NDC 0904-7130-61 D-0010-2026
Class II · Moderate risk

Major ChlorproMAZINE Hydrochloride Tablets

CGMP Deviations: Presence of N-Nitroso Desmethyl Chlorpromazine above the recommended intake limit

Ongoing Nitrosamine impurity The Harvard Drug Group LLC dba Major Pharmaceuticals and Rugby Laboratories NDC 0904-7130-06 D-0009-2026