What's Going on with Nac?

Amazon confirmed this week it's in the process of removing from its website dietary supplements containing NAC (N-acetyl-L-cysteine). 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.

Why is NAC no longer available?

With recent revelations of the efficacy of NAC in possibly treating and being highly effective as a component in drastically improving immune health, the FDA has decided to ban its sale as a supplement. ... NAC is an essential amino acid, we must consume it via supplementation because our body cannot create it naturally.

Why is the FDA removing NAC?

FDA stated in 2020 warning letters that NAC could not be lawfully marketed in dietary supplements because the ingredient was first approved as a drug in 1963. The agency's move, trade groups argued, marked a sudden, unexpected pivot affecting an ingredient widely sold in supplements.