ghk cu copper overload risk high doses Selected Biomarkers Revealed Potential Skin Toxicity Caused by Certain Compounds GHK-Cu: The Regenerative Peptide for

Signs and symptoms that are sometimes reported for patients deficient in vitamin B12

WADA Prohibition The World Anti-Doping Agency classifies both peptides as prohibited substances for competitive athletes: Section S2 classification Peptide Hormones, Growth Factors, and Related Substances Prohibited at all times (both in-competition and out-of-competition) No Therapeutic Use Exemptions available not recognized as legitimate medical treatments Performance-enhancing potential acknowledged due to growth hormone secretagogue effects Detection methods under development for anti-doping testing programs WADAs position reflects that these peptides possess clear performance-enhancing properties and lack approved therapeutic applications that would justify medical use exemptions

Topical: May cause mild redness or tingling in people with very sensitive skin

However, the compound became widely available for routine use in the treatment of B12 deficiency in the early 1950s