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 is also necessary for the formation of glutathione. Molybdenum and selenium are essential trace minerals that facilitate the production of several important enzymes. With Selenium & Molybdenum Maintains Cellular HealthDietary Considerations Wheat FreeDairy/ Milk FreeGluten FreeSoy FreeYeast FreeSugar FreeSalt FreeEgg FreeShellfish FreeServing Size:1 VCapServings Per Container:250Amount Per ServingMolybdenum (as Amino Acid Chelate)50 mcgSelenium (as L-Selenomethionine)25 mcgN-Acetyl Cysteine600 mgOther IngredientsCellulose (capsule), Stearic Acid (vegetable source), Citric AcidSuggested Use As a dietary supplement, take 1 Vcap 2 times a day.WarningsContains no sugar, salt, yeast, wheat, gluten, soy, milk, egg or shellfish.Store in a cool, dry place.