N-Acetyl-L-Cysteine (NAC) is an amino acid that is a precursor to glutathione, the body’s most powerful antioxidant, which helps promote optimal detoxifi cation. NAC is heavily researched for its role in optimizing lung health, and is also used for rapid recovery after workouts.+0 It is also beneficial for protection against normal exposure to heavy metals.** Recommended Use: As a dietary supplement, take one capsule per day, or as directed by your health care practitioner. N-Acetyl Cysteine (NAC) is an amino acid that is a precursor to glutathione, the body’s most powerful antioxidant. NAC is heavily researched in bronchial and lung disorders. It is also used for rapid recovery after workouts. NAC can be used in any cases where there is a need to rebuild the liver and promotes optimal detoxification. It is also researched for protection from heavy metal damage.