ghk-cu plasma concentration age decline levels The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive ghk-cu levels in human plasma – Effects of age on concentrations

(2005) Thymosin beta-4: Actin-sequestering protein and regulator of cell migration Smart et al

Influencers, wellness clinics, telehealth companies, and podcast personalities spent years promoting peptides as shortcuts to faster recovery, better sleep, weight loss, improved cognition, lower inflammation, and slower aging

Serums typically contain 1% to 3% GHK-Cu concentration

(2015) Biomed Res Int Pickart (2008) J Biomater Sci Polym Ed Pickart et al

Compounded products do not pass through that same approval process

Guo J, Huang X, Dou L, Yan M, Shen T, Tang W, Li J (2022) Aging and aging-related diseases: from molecular mechanisms to interventions and treatments