Factors affecting your specific tolerance include your dose level (higher doses often mean lower tolerance), how long youve been on the medication (tolerance sometimes improves with time), your individual digestive system characteristics, and your body composition and metabolism
Pickart and Margolina's research on the 4,000+ genes influenced by GHK-Cu describes a pattern of cumulative repair rather than diminishing returns
Sethiya, N
Evidence also suggests improved function of mitochondrial enzymes such as cytochrome c oxidase, which play roles in energy metabolism and redox balance
[DOI] [PubMed] [Google Scholar] 14.Pan X., Nasaruddin M.B., Elliott C.T., McGuinness B., Passmore A.P., Kehoe P.G., Hlscher C., McClean P.L., Graham S.F., Green B.D