NutriDyn NAC-600 contains pharmaceutical grade N-acetyl-L-cysteine (NAC) for supporting glutathione synthesis in the body, a key tripeptide that has important antioxidant roles in humans.^◆ NAC is an acetylated version of the amino acid L-cysteine, which is the limiting factor to glutathione production since it is rarely found in foods.

Much of the L-cysteine ingested through diet and/or supplementation is suggested to be lost to first-pass metabolism. Moreover, supplementing with glutathione itself is imprudent as it is rapidly broken down by the intestines.

This is where NAC-600 comes into play, as its structural difference makes it more resistant to metabolism and thus more L-cysteine can be distributed to the body (resulting in increased glutathione production).

Since glutathione is one of the body's major endogenous antioxidants and also involved in many metabolic reactions, low levels of this peptide are associated with high levels of oxidative stress and impairments in nearly every system in the body.