FDA last year asserted in warning letters that NAC couldn’t be lawfully marketed in dietary supplements because it was first studied as a drug in 1963. The Council for Responsible Nutrition (CRN) made legal arguments challenging the agency’s position in a 2020 letter to FDA.
Amazon verifies it’s eliminating for sale NAC supplements
Amazon confirmed this week it's removing from its website products containing an ingredient widely sold in dietary supplements—NAC (N-acetyl-L-cysteine).
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