Why the USA did not ban metformin, but recalled specific products
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4 min read
In 2020, the U.S. Food and Drug Administration (FDA) issued voluntary recalls for several lots of extended-release (ER) metformin due to contamination, not a nationwide ban. The action targeted specific batches from certain manufacturers that contained unacceptable levels of the impurity N-Nitrosodimethylamine (NDMA), a probable human carcinogen, but left other metformin products on the market.