Life Extension N-Acetyl-L-Cysteine 600mg Capsules are a dietary supplement designed to support immune, bronchial, respiratory and liver health. N-acetyl-L-cysteine, also known as NAC, is an easily absorbed form of the amino acid cysteine and acts as a precursor to glutathione, one of the body’s key antioxidants. By supporting glutathione levels, NAC helps protect cells from oxidative stress and supports normal cellular defence. It also helps promote healthy respiratory function and liver detoxification processes. The gluten-free and non-GMO capsule format is suitable for adults looking to support daily antioxidant protection and overall wellness.