Protocol for Life Balance NAC N-Acetyl-Cysteine is a dietary supplement that provides 600 mg of NAC per serving. This product is designed to support cellular health, glutathione synthesis, and lung health. It includes selenium and molybdenum, which are essential trace elements that function as cofactors in many biochemical reactions. The supplement is non-GMO, dairy-free, and made without gluten. It comes in a bottle containing 100 vegetable capsules.