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GHK-Cu at Calibrate IV The Calibrate IV GHK-Cu Copper Peptide Cream delivers a 2% medical-grade concentration the threshold at which clinical studies demonstrate measurable fibroblast activation and collagen density improvement

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doi: 10.1016/j.npep.2018.07.003 76 BrauerRWeiLMaTAthaudaDGirgesCVijiaratnamNet al

The GLP-1 drug participants had no progression of motor symptoms (-0.04), and the 3.04 worsening in the placebo group (difference between the two arms=3.08) is just short of what is considered clinically meaningful (3.5)