Online Pharmacy Says Tests Found Probable Carcinogenic Impurity In Metformin

reports Valisure, an online pharmacy, announced “its tests showed high levels of a probable cancer-causing impurity in [the] diabetes drug metformin” and that it has called for the FDA to recall the lots they identified. Valisure announced that high levels of NDMA “were found in metformin made by 11 companies, including Amneal Pharmaceuticals Inc and Aurobindo Pharma Ltd.” Ed Silverman writes in his “Pharmalot” blog for STAT (3/2) that Valisure filed a petition with the FDA saying that NDMA was found above acceptable levels in 16 batches of metformin made by 11 companies.