The question has no clean answer: potency is receptor- and species-specific, and the two have never been compared head-to-head in humans
4.5 Harmony The HARMONY study of abirutide, published in 2018, enrolled 9,463 T2DM patients aged 40 years or older with confirmed ASCVD (coronary heart disease, cerebrovascular disease, or peripheral arterial disease) in 28 countries, excluding those with severe CKD (Green et al., 2018)
GHK-Cu is a tripeptide, containing just three amino acids plus a copper ion that forms part of its functional structure
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K., Gajos, G., Colhoun, H