Solgar’s NAC (N-Acetyl Cysteine) 600 mg in vegetable capsule is derivate from the amino acid cysteine. NAC is a potent antioxidant that helps reinforce the body’s own antioxidant support system by being a precursor to glutathione, a powerful intracellular antioxidant made by the body. NAC supports a number of processes including liver detoxification, it helps stimulate the release of mucous from the lungs and supports normal blood clotting and been shown to be beneficial in multiple areas of neurological health. As a free form amino acid it is easily assimilated into the body. Vegan friendly.