N-Acetyl-Cysteine (NAC) is a stable form of the non-essential amino acid L-Cysteine. Cysteine is a sulfur-containing amino acid that acts as a stabilizer for the formation of protein structures. Although NAC possesses its own free radical scavenging activity, its primary function in the body is to supply Cysteine necessary for glutathione synthesis and replenishment. This unique formula also contains Molybdenum, an essential trace element that functions as a cofactor in many biochemical reactions, and Selenium, another trace mineral that supports glutathione production. Maintains Cellular Health Glutathione Precursor Dietary Considerations Wheat Free Dairy/ Milk Free Gluten Free Vegetarian Soy Free Vegan Egg Free Shellfish Free Non-GMO Fish Free Tree Nut Free Serving Size: 1 Vegetable Capsule Servings Per Container: 100 Amount Per Serving % Daily Value Selenium (as L-Selenomethionine) 25 mcg 45% Molybdenum (as Amino Acid Chelate) 50 mcg 111% N-Acetyl Cysteine Other Ingredients: Hypromellose (cellulose capsule), Stearic Acid (vegetable source), Citric Acid Suggested Usage: Take 1 capsule twice daily or as directed by your health care practitioner. CAUTIONS/INTERACTIONS: NAC may interact with certain pharmaceutical medications including ACE inhibitors and angina medications such as nitroglycerin and isosorbide. NAC may also interact with activated charcoal. Keep freshness packets in bottle until it is empty. Keep bottle tightly closed at all times in between usage. Natural variation may occur in this product when exposed to air. Speckling in capsule may occur but does not affect product quality.