N-Acetyl-Cysteine Supports Glutathione Production* Healthy Respiratory Function* N-acetyl-cysteine (NAC) is a stable and bioactive form of cysteine, an amino acid that plays a key role in phase II detoxification and homocysteine metabolism.* NAC is efficiently transported into the cell, where it is readily converted to cysteine for glutathione synthesis and regeneration.* Because NAC can penetrate the blood-brain barrier, it is especially important for maintaining healthy brain and nervous system tissues.* NAC also helps to support respiratory health by promoting normal mucus viscosity.*Suggested Use: Take 1 tablet 1 to 3 times daily, or as directed by your healthcare practitioner.Serving Size: 1 TabletAmount Per ServingN-Acetyl-Cysteine ... 1g (1,000mg)(NAC)Other Ingredients: Microcrystalline Cellulose, Hydroxypropyl Cellulose, Stearic Acid (vegetable source), Vegetarian Coating and Silicon Dioxide.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.Cautions / InteractionsNAC may interact with nitroglycerin. Consult your healthcare practitioner before taking this product if you are taking nitroglycerin.Natural color variation may occur in this product.