- 2021-12-29 Metformin HCl Extended-Release Tablets USP, 750 mg by Viona Pharmaceuticals: Recall - Due to the Detection of N-Nitrosodimethylamine (NDMA) Impurity (FDA) .
- 2021-10-14 Lupin Pharmaceuticals, Inc. Issues Voluntarily Nationwide Recall of All Irbesartan Tablets and Irbesartan and Hydrochlorothiazide Tablets Due to Potential Presence of N-nitrosoirbesartan Impurity (FDA) .
- 2021-06-14 Viona Pharmaceuticals Inc., Issues Voluntary Nationwide Recall of Metformin HCl Extended-Release Tablets, USP 750 mg, Due to the Detection of N-Nitrosodimethylamine (NDMA) Impurity (FDA) .
- 2021-01-26 Nostrum Laboratories, Inc. Expands Voluntary Nationwide Recall of Metformin HCl Extended Release Tablets, USP 750 mg, Due to N-Nitrosodimethylamine (NDMA) Content Above the Acceptable Daily Intake (ADI) Limit (FDA) .