NDMA is a probable human carcinogen, according to the FDA. It and other nitrosamine impurities have been making headlines over the contamination of blood pressure and heart failure medications and have caused recalls of the prescriptions over the past year.
The FDA has not recalled Zantac and the generic heartburn medications but is investigating if the levels found pose a risk to patients. If it does, the FDA will issue an update, officials said.
NDMA has been found to cause cancer in large amounts, but the amount found in preliminary tests of ranitidine show amounts that are barely over those that are found in food, the FDA said. NDMA is an environmental contaminant found in water, meats, dairy products and vegetables.
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