Noble NAC (N-Acetyl Cysteine) 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. Noble 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.