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Since abnormal lung regeneration and repair are potential processes in the pathogenesis of COPD, and the GHK-Cu complex plays a protective role in regeneration and wound healing, it is of significance to confirm whether GHK-Cu is effective in COPD as a protective agent against cigarette smoke-induced emphysematous destruction

Analytical approaches for structural verification and impurity profiling, as well as global regulatory classifications and formulation-stability considerations, are also summarized

A longer, dose-dependent safety picture for this whole drug family is discussed in our review of GLP-1-class side-effect and safety research

Ghrelin is the only one that is orexigenic, whereas the others possess anorexigenic characteristics (Koliaki et al., 2020)