Liver Protect^™ contains the amino acid N-acetyl-L-cysteine, a key component of glutathione—a tripeptide that plays a significant role in detoxification and antioxidant support. Liver Protect also contains a combination of alpha-lipoic acid, milk thistle extract, thistle, and selenium for support of antioxidant activity, regeneration of other antioxidants, and promotion of healthy immune function.*