FDA says new testing method found unacceptable levels of impurities in heartburn drugs

REUTERS: The U.S. Food and Drug Administration said on Wednesday it found "unacceptable levels" of a cancer-causing impurity in limited testing using low-heat method of samples of heartburn medicines such as Zantac containing the ingredient ranitidine.

However, the agency said its testing method found much lower levels of the impurity, N-nitrosodimethylamine, than a higher temperature method used by third-party laboratories. The FDA recommends the low-heat testing method for the drugs.

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Earlier in the day, Walmart Inc joined pharmacy chains CVS Health Corp, Walgreens Boots Alliance Inc and Rite AidRead More – Source