Dietary Supplement Gluten and Excipient-Free Manufactured in a GMP Compliant Facility N-Acetyl-L-Cysteine (NAC) is an amino acid that supports detoxification, reduces oxidative stress, and helps stabilize blood sugar. NAC aids the body’s phase II detoxification pathways, glutathione conjugation and sulphation. By providing the limiting factor in glutathione synthesis, NAC helps to restore intracellular glutathione levels. Since NAC plays a major role in detoxification, it may offer protection against daily exposure to environmental contaminants and toxins. Promotes healthy glutathione levels. Supports detoxification pathways. Helps loosen and clear mucous.