N-Acetyl-L-Cysteine 500 mg (90 vegetarian Caps)

N-Acetyl-L-Cysteine 750 mg capsules, provided by Douglas Laboratories, contain 750 mg pure N-acetyl- L-cysteine (NAC). NAC is a biologically active precursor for the amino acid cysteine which, in turn, is a precursor for glutathione, a tripeptide with antioxidant properties.