ghk cu subq side effects GHK-Cu for Skin Rejuvenation The Effect of the Human
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10.1016/s0305-4179(01)00055-9 78 MiyamotoS.TakaokaK.OkadaT.YoshikawaH.HashimotoJ.SuzukiS.et al (1992)

That said, it remains the only head-to-head comparison available, and GHK-Cu won on the metric that was measured

[DOI] [PubMed] [Google Scholar] Robert A

But the following days brought on nausea, weakness, diarrhea, and that was followed by a very mild itching over my body, as if I was about to get hives, and I did get a few bumps

Study 1: Knee pain (2021)