Now Foods, Nac-Acetyl Cysteine (NAC), 600 mg, 100 CapsProduct Description 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.* Product Benefits Critical Antioxidant. With Selenium & Molybdenum. Maintains