GHK-Cu does not inhibit ghrelin, does not stimulate GLP-1 receptors, and does not meaningfully alter insulin sensitivity
(1998, JAMA) demonstrated in a placebo-controlled crossover study of 32 healthy older adults that 25 mg daily raised mean 24-hour GH concentration and IGF-1 significantly, with IGF-1 increases averaging roughly 40% above baseline
Stier, H., Vos, E., & Kenley, D
We're starting with a fundamental one
Adding a minor secondary ingredient (e.g., Vitamin B12) to an unapproved peptide does not legally differentiate it or create a compliant formulation
Animal studies suggest it may accelerate repair of muscle, tendon, and ligament injuries while reducing inflammation and soreness, allowing faster return to training