NDMA in Metformin: FDA Finds Low Levels in Only 2 of 10 Tested Products

The US Food and Drug Administration (FDA) on Monday said that no tested samples of the type 2 diabetes drug metformin contained unaccceptable levels of the N-Nitrosodimethylamine (NDMA) impurity. The testing was done because if people are exposed to NDMA above the acceptable levels, it may increase the risk of cancer.