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

Valsartan Tablets 80 mg USP

CGMP Deviations; Detection of a trace amount of unexpected impurity N- nitrosodiethylamine (NDEA) found in finished products

Ongoing Nitrosamine impurity Rising Pharmaceuticals, Inc. NDC 52343-123-90 D-1053-2019
Class II · Moderate risk

Valsartan Tablets 40 mg USP

CGMP Deviations; Detection of a trace amount of unexpected impurity N- nitrosodiethylamine (NDEA) found in finished products

Ongoing Nitrosamine impurity Rising Pharmaceuticals, Inc. NDC 52343-122-30 D-1052-2019
Class II · Moderate risk

Losartan Potassium Tablets

CGMP Deviations: presence of an impurity, N-Methylnitrosobutyric acid (NMBA) was identified.

Terminated Nitrosamine impurity Preferred Pharmaceuticals, Inc D-1051-2019
Class II · Moderate risk

Valsartan Tablets USP 160 mg

CGMP Deviation: Presence of NDEA (N-Nitrosodimethylamine), a carcinogen impurity, detected in the active ingredient.

Terminated Nitrosamine impurity American Health Packaging D-1047-2019
Class II · Moderate risk

Losartan Potassium Tablets

CGMP Deviations: presence of an impurity, N-Methylnitrosobutyric acid (NMBA) detected.

Terminated Nitrosamine impurity Legacy Pharmaceutical Packaging LLC NDC 68645-494-54 D-1075-2019
Class II · Moderate risk

Losartan Potassium Tablets

CGMP Deviations: presence of an impurity, N-Methylnitrosobutyric acid (NMBA) detected

Ongoing Nitrosamine impurity Legacy Pharmaceutical Packaging LLC NDC 68645-579-54 D-1050-2019
Class II · Moderate risk

Losartan Potassium Tablets

CGMP Deviations: presence of an impurity, N-Methylnitrosobutyric acid (NMBA) detected

Ongoing Nitrosamine impurity Legacy Pharmaceutical Packaging LLC NDC 68645-578-54 D-1049-2019
Class II · Moderate risk

Losartan Potassium Tablets

CGMP Deviations: presence of an impurity, N-Methylnitrosobutyric acid (NMBA) detected

Ongoing Nitrosamine impurity Legacy Pharmaceutical Packaging LLC NDC 68645-577-54 D-1048-2019
Class II · Moderate risk

Losartan Potassium Tablets

CGMP Deviations: FDA lab confirmed presence of an impurity, N-Methylnitrosobutyric acid (NMBA) in the finished product above the interim acceptable daily intake level.

Ongoing Nitrosamine impurity Torrent Pharma Inc. D-1116-2019
Class II · Moderate risk

Losartan Potassium Tablets

CGMP Deviations: FDA lab confirmed presence of an impurity, N-Methylnitrosobutyric acid (NMBA) in the finished product above the interim acceptable daily intake level.

Ongoing Nitrosamine impurity Torrent Pharma Inc. D-1115-2019
Class II · Moderate risk

Losartan Potassium Tablets

CGMP Deviations: FDA lab confirmed presence of an impurity, N-Methylnitrosobutyric acid (NMBA) in the finished product above the interim acceptable daily intake level.

Ongoing Nitrosamine impurity Torrent Pharma Inc. D-1114-2019
Class II · Moderate risk

Losartan Potassium Tablets USP

CGMP Deviations; trace amounts of N-Nitroso N-Methyl 4-amino butyric acid (NMBA) detected in the active pharmaceutical ingredient

Ongoing Nitrosamine impurity Camber Pharmaceuticals Inc NDC 31722-702-30 D-1043-2019
Class II · Moderate risk

Losartan Potassium Tablets USP

CGMP Deviations; trace amounts of N-Nitroso N-Methyl 4-amino butyric acid (NMBA) detected in the active pharmaceutical ingredient

Ongoing Nitrosamine impurity Camber Pharmaceuticals Inc NDC 31722-701-30 D-1042-2019
Class II · Moderate risk

Losartan Potassium Tablets USP

CGMP Deviations; trace amounts of N-Nitroso N-Methyl 4-amino butyric acid (NMBA) detected in the active pharmaceutical ingredient

Ongoing Nitrosamine impurity Camber Pharmaceuticals Inc NDC 31722-700-90 D-1041-2019
Class I · High risk

Golean DETOX capsules

Marketed Without an Approved NDA/ANDA: FDA analysis found product to contain undeclared sibutramine and phenolphthalein. Sibutramine is an appetite suppressant that was withdrawn from the US market due to safety concerns. Phenolphthalein was once an ingredient used in over-the-counter laxatives, but because of concerns of carcinogenicity is not currently approved for marketing in the US. The presence of sibutramine and phenolphthalein in this product renders it an unapproved drug for which the safety and efficacy has not been established and, therefore, subject to recall.

Terminated Nitrosamine impurity Golean Detox US D-1009-2019
Class II · Moderate risk

Irbesartan and Hydrochlorothiazide Tablets

CGMP Deviations: FDA lab confirmed presence an impurity, N-nitrosodimethylamine (NDEA) contained in the API used to manufacture the product above the interim acceptable daily intake level of 0.083 parts per million.

Completed Nitrosamine impurity Prinston Pharmaceutical Inc NDC 43547-330-03 D-0413-2019
Class II · Moderate risk

Irbesartan and Hydrochlorothiazide Tablets

CGMP Deviations: FDA lab confirmed presence an impurity, N-nitrosodimethylamine (NDEA) contained in the API used to manufacture the product above the interim acceptable daily intake level of 0.083 parts per million.

Completed Nitrosamine impurity Prinston Pharmaceutical Inc NDC 43547-331-09 D-0412-2019