Allergy Research Group NAC N-Acetyl-L-Cysteine is a dietary supplement for antioxidant support. N-Acetyl-L-Cysteine (NAC) is derived from the amino acid L-cysteine which is a precursor to glutathione. NAC is involved in metabolic processes, enzyme activation, protein synthesis, and DNA repair and synthesis. It is a source of sulfur and is the primary antioxidant produced in the body.

NAC, the acetyl derivative of L-cysteine, is more stable than L-cysteine, and can convert into L-cysteine after being absorbed. NAC is a natural source of sulfur for metabolism, and an antioxidant that supports glutathione synthesis.* NAC may be used instead of L-cysteine as an adjunct to Item #70130 Original AntiOx. Free form amino acid, high purity, well tolerated, and in tablet form to insure potency