N-Acetyl L-Cysteine (NAC) provides a stable form of L-cysteine – a precursor to glutathione, one of the body’s most important and potent antioxidants. While naturally-occurring L-cysteine is unstable and cannot be taken alone as a supplement, NAC remains stable and digestible for a long time.
NAC itself is also used by the body to detox, as well as being a building block of glutathione used for the same purpose. It can also provide immune support as a powerful detoxifier of immune suppressors like alcohol, tobacco smoke, and other environmental pollutants. Finally, the antioxidant properties of NAC are vital for combatting ailments caused by oxidative stress, such as heart disease, infertility, and some psychiatric conditions.