ghk-cu long-term use tolerance as a multifunctional copper peptide: synthesis routes, process engineering and emerging applications | Systems Microbiology and Biomanufacturing How Often to Inject GHK-Cu
Description
Goop this is not, at least not in its aesthetic, though a comparison is apt

Healthy individuals with normal B12 levels and intact absorption do not benefit from injections, and routine use for 'energy boosting' is not supported by clinical evidence or NHS guidelines

Kulkarni K, Kelderman J, Coleman H, Aguilar M-I, Parkington H, Del Borgo M

Women report similar results timelines and side effect profiles as men
