NAC (N-Acetyl L-Cysteine) is an acetylated form of the amino acid cysteine, commonly used in nutrition to support overall wellbeing and physiological function.

In the body, cysteine contributes to the production of glutathione, an antioxidant that plays a role in protecting cells from oxidative stress. Antioxidants like glutathione support cellular health and contribute to normal immune system function.