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

Rifampin Capsules

Failed impurities/degradation specifications: Finished product exceeds the 5 ppm interim limit for 1-Methyl-4-Nitrosopoperazine (MNP).

Ongoing Nitrosamine impurity Akorn, Inc. NDC 61748-015-30 D-1547-2022
Class II · Moderate risk

Rifampin Capsules

CGMP Deviations:OOS result was observed in 1-Methyl-4-Nitroso Piperazine (MNP) impurity.

Terminated Nitrosamine impurity Lupin Pharmaceuticals Inc. D-1343-2022
Class II · Moderate risk

Irbesartan Tablets USP

CGMP Deviations: impurity N-nitrosoirbesartan detected in API

Terminated Nitrosamine impurity Lupin Pharmaceuticals Inc. NDC 68180-412-06 D-0088-2022
Class II · Moderate risk

Irbesartan Tablets USP

CGMP Deviations: impurity N-nitrosoirbesartan detected in API

Terminated Nitrosamine impurity Lupin Pharmaceuticals Inc. NDC 68180-411-06 D-0087-2022
Class II · Moderate risk

Irbesartan Tablets USP

CGMP Deviations: impurity N-nitrosoirbesartan detected in API

Terminated Nitrosamine impurity Lupin Pharmaceuticals Inc. NDC 68180-410-06 D-0086-2022
Class II · Moderate risk

Chantix (varenicline)

CGMP Deviations: Presence of the N-nitroso-varenicline impurity above FDA s acceptable interim acceptable intake limit

Ongoing Nitrosamine impurity Pfizer Inc. NDC 0069-0469-03 D-0811-2021
Class II · Moderate risk

Chantix (varenicline)

CGMP Deviations: Presence of the N-nitroso-varenicline impurity above FDA s acceptable interim acceptable intake limit

Ongoing Nitrosamine impurity Pfizer Inc. NDC 0069-0469-56 D-0810-2021
Class II · Moderate risk

Chantix (varenicline)

CGMP Deviations: Presence of the N-nitroso-varenicline impurity above FDA s acceptable interim acceptable intake limit

Ongoing Nitrosamine impurity Pfizer Inc. NDC 0069-0468-56 D-0809-2021
Class II · Moderate risk

Chantix (varenicline)

CGMP Deviations: Presence of the N-nitroso-varenicline impurity above FDA s acceptable interim acceptable intake limit

Ongoing Nitrosamine impurity Pfizer Inc. NDC 00069-0471-03 D-0808-2021