How long should a GHK-Cu cycle be?

Published human trials do not establish a cycle length for GHK-Cu. The human record for this peptide is topical skin work, not an injected on/off calendar. Cycle lengths circulating online for injectable GHK-Cu are unverified community practice. This site does not invent a schedule. Full detail at /cycling.

Full cycling page: what is measured versus assumed

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of cycling and clearance. Whether peptides need a break, what a half-life actually tells you, and where a real cycling mechanism has been measured. Full detail at /cycling.