The federal Food and Drug Administration (FDA) has learned that some ranitidine medicines, including some products commonly known as the brand-name drug Zantac, contain a nitrosamine impurity called N-nitrosodimethylamine (NDMA) at low levels. According to the Medwatch issued by the FDA, NDMA is classified as a probable human carcinogen (a substance that could cause cancer)… Continue reading Read This if You Take Ranitidine Medicines