THORNE NAC, 500 mg N-Acetylcysteine, Amino Acid Supplement, 90 Capsules | Supports Respiratory & Immune Health, Promotes Liver & Kidney Detox*, Gluten, Dairy & Soy-Free, NSF Contents Certified

Trusted: Thorne is trusted by 100+ professional sports teams and the #1 most recommended clinical brand by consumers and health-care practitioners (Based on a 2026 independent survey of US supplement consumers and health-care practitioners). Third-Party Certified: This product has been third-party tested and certified to verify what's in the package matches what's on the label and to confirm it contains no unsafe levels of contaminants. Antioxidant Support: Enhances antioxidant activity to promote a normal inflammatory response in the lungs*. Clears Mucus: Helps break up mucus, making it easier to clear from congested lungs and sinuses*. Immune Support: Enhances immune function by supporting the production and function of immune cells*.