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 body and maintains healthy lung and liver function.

NAC breaks up mucus, which decreases the viscosity and congestion that accompanies excess mucus and sinus drainage. It also both modulates the production of and is the precursor for glutathione, a powerful antioxidant that protects the body against natural and man-made oxidants. It can be used to treat acetaminophen poisoning and reduce the damage to the kidneys that accompanies acetaminophen overdose.