GHK CU Averix Labs NAC is more than an antioxidant it's the building block of glutathione, the body's most powerful defense molecule. Unlike many supplements, NAC has decades of clinical use supporting: Respiratory health Active just means the serum contains a functional, lab verified concentration of real GHK Cu copper peptide not just colour or trace copper. Our formula includes 300mg of pure GHK Cu (1% concentration) in Acetylcysteine, N acetylcysteine, NAC drug molecule. It is an antioxidant and glutathione inducer. Skeletal chemical formula on the dark blue backgrou Stock Photo Alamy Glutathione Getting the k'NAC'k of Parkinson's disease The Science of Parkinson's