For a detailed guide on interpreting COA documents, see our article on how to read a peptide COA
The slow timeline discourages many users who quit before seeing benefits
(1) O P Stanojlovi 1, D P Zivanovi, and V T Susi (2000) The effect of delta sleep-inducing peptide on the EEG and power spectra in rat Indian Journal of Physiology & Pharmacology, 2000 Oct, Volume 44 (Issue 4), Pages 428-34
Patients should avoid self-treating with peptides purchased from unknown suppliers
Anti-Aging Claims and Evidence Quality Anti-aging claims for GHK-Cu should be split into skin-aging claims, which have some topical human evidence, and systemic anti-aging claims, which remain much less established [2], [10]