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

Carvedilol Tablets USP

CGMP Deviations: Results for N-Nitroso Carvedilol Impurity-1 (NNCI) impurity observed to be above the FDA-recommended limit of NMT 4.0 ppm

Ongoing Nitrosamine impurity The Harvard Drug Group LLC dba Major Pharmaceuticals and Rugby Laboratories NDC 0904-7307-61 D-0594-2025
Class II · Moderate risk

Carvedilol Tablets

CGMP Deviations: Presence of a nitrosamine, N-Nitroso Carvedilol I Impurity above the current Acceptable Intake Level.

Ongoing Nitrosamine impurity Glenmark Pharmaceuticals Inc., USA NDC 68462-165-05 D-0579-2025
Class II · Moderate risk

Carvedilol Tablets

CGMP Deviations: Presence of a nitrosamine, N-Nitroso Carvedilol I Impurity above the current Acceptable Intake Level.

Ongoing Nitrosamine impurity Glenmark Pharmaceuticals Inc., USA NDC 68462-164-05 D-0578-2025
Class II · Moderate risk

Carvedilol Tablets

CGMP Deviations: Presence of a nitrosamine, N-Nitroso Carvedilol I Impurity above the current Acceptable Intake Level.

Ongoing Nitrosamine impurity Glenmark Pharmaceuticals Inc., USA NDC 68462-162-05 D-0577-2025
Class II · Moderate risk

Carvedilol Tablets

CGMP Deviations: Results for N-Nitroso Carvedilol Impurity-1 (NNCI) impurity observed to be above the FDA-recommended limit of NMT 4.0 ppm

Ongoing Nitrosamine impurity Glenmark Pharmaceuticals Inc., USA D-0588-2025
Class II · Moderate risk

Carvedilol Tablets

CGMP Deviations: Results for N-Nitroso Carvedilol Impurity-1 (NNCI) impurity observed to be above the FDA-recommended limit of NMT 4.0 ppm

Ongoing Nitrosamine impurity Glenmark Pharmaceuticals Inc., USA NDC 68462-164-05 D-0587-2025
Class II · Moderate risk

Metoprolol Tartrate Tablets

CGMP Deviations: Presence of a nitrosamine, N-nitroso-metoprolol above the established Acceptable Daily Intake (ADI) level.

Ongoing Nitrosamine impurity Westminster Pharmaceuticals LLC NDC 69367-355-10 D-0582-2025
Class II · Moderate risk

Metoprolol Tartrate Tablets

CGMP Deviations: Presence of a nitrosamine, N-nitroso-metoprolol above the established Acceptable Daily Intake (ADI) level.

Ongoing Nitrosamine impurity Westminster Pharmaceuticals LLC NDC 69367-354-10 D-0581-2025
Class II · Moderate risk

Doxepin Hydrochloride Capsules

CGMP Deviations: Presence of Nitrosamine Drug Substance Related Impurity above the proposed interim limit.

Ongoing Nitrosamine impurity Alembic Pharmaceuticals Limited NDC 62332-637-31 D-0566-2025
Class II · Moderate risk

Rizatriptan Benzoate Tablets

CGMP Deviations: detection of N-nitroso-dimethyl-rizatriptan impurity, above the FDA recommended acceptable intake limit.

Ongoing Nitrosamine impurity Ascend Laboratories, LLC NDC 67877-262-18 D-0534-2025
Class II · Moderate risk

Rizatriptan Benzoate Tablets

CGMP Deviations: detection of N-nitroso-dimethyl-rizatriptan impurity, above the FDA recommended acceptable intake limit.

Ongoing Nitrosamine impurity Ascend Laboratories, LLC NDC 67877-261-18 D-0533-2025
Class II · Moderate risk

Fluoxetine Tablets

CGMP Deviations: Presence of N-Nitroso Fluoxetine exceeding interim acceptable intake limit.

Completed Nitrosamine impurity Torrent Pharma Inc. D-0456-2025