May 04, 2020 N-acetyl-L-cysteine (NAC) is a highly bioavailable modified form of the amino acid L-cysteine that supports glutathione synthesis in the body. Glutathione is a crucial tripeptide that has important antioxidant roles in humans.[1] Since L-cysteine is rarely found in foods, and not well-absorbed, it tends to be a limiting factor of…
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