A biosynthesized amino acid found naturally within our bodies; N-acetyl-L-cysteine or 'NAC' is a derivative of the amino acid cysteine. Primarily used as a mucolytic agent, it is an important antioxidant that protects cells against oxidative stress.

NAC has been recognised throughout the world not only for its powerful antioxidant properties but also for its ability to dissolve thick mucus, breaking disulfide bonds in mucus and liquefying it.

NAC is now also being recognised the world over for its ability to help with much more serious illnesses. Various studies have shown that NAC supplementation has shown a marked increase in immunological functions and plasma albumin concentrations.