Dietary Supplement. N-acetyl-l-cysteine. Soy free. Guaranteed No Added: sugar, starch, wheat, corn, fish, shell fish, peanuts, tree nuts, soy, yeast, artificial colors or flavors, dairy, egg, fragrance, preservatives. Sodium free. Est. 1967. May support cellular health. Mason Guarantee: Laboratory tested. cGMP Certified: Certified Good Manufacturing Practice. www.MasonVitamins.com. (This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.)