NAC (N-Acetyl-l-Cysteine) 600mgpromotes normal mucus levels in healthy sinus and respiratory systems* provides immune system support* maintains healthy liver function* N Acetyl Cysteine maintains the proper functioning of the lungs and supports the immune system and liver function.* NAC is also a powerful antioxidant.* It maintains and supports normal physiologic levels of mucus in the sinus and respiratory system of healthy individuals.* NAC increases levels of glutathione in the