N-Acetyl L-Cysteine, also called NAC, is derived from the amino acid, L-Cysteine, and is a source of Cysteine for the body. Not only that it's a source of cysteine for the body, NAC is essential for antioxidant production and also synthesis of glutathione, which is an important antioxidant that helps protect the body from oxidative damage.* In addition, there is a wide range of health benefits of NAC supplements. This includes kidney health, liver health, and immune health.* And, NAC, which is both in NAC powder and NAC capsules, may help support brain health and promotes healthy mood.* As a source of antioxidants, N-Acetyl L-Cysteine, or NAC supplement, may also help support lung health and it's function.* Lastly, our NAC supplement is sold in both powder and capsule form. Both does not contain any filler, additives and artificial flavors. Not only that it's filler free, each serving contains 600 mg of NAC in both powder and capsules. It's also gluten free, dairy free, soy free, and especially no added sugars!