N-acetyl cysteine (NAC) is a stable form of the non-essential amino acid cysteine. It is a sulfur-containing amino acid that acts as a stabilizer for the formation of protein structures, and promotes the formation of glutathione. Glutathione is a powerful free radical scavenging compound that also helps to maintain normal, balanced immune system function. In addition, NAC can help to support healthy brain and neuronal tissues. Natural color variation may occur in this product. For adults only. Consult physician if pregnant/nursing, taking medication (especially nitroglycerin) or have medical condition. Keep out of reach of children. Do not eat freshness packets. Keep in bottle. Store in a cool, dry place after opening. Allergen Caution: Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.This product is labelled to United States standards and may differ from similar products sold elsewhere in its ingredients, labeling and allergen warningsN-Acetyl-Cysteine (NAC) Amt Per Serving:1 g (1000 mg) % Daily Value :N/A,Daily value not established.,As a dietary supplement, take 1 tablet 1 to 3 times daily.Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.