Injectable GHK-Cu has no published human clinical trials
Immunity 57:15491566.e1548 Kanda A, Yasutaka Y, Van Bui D, Suzuki K, Sawada S, Kobayashi Y, Asako M, Iwai H (2020) Multiple biological aspects of eosinophils in host defense, eosinophil-associated diseases, immunoregulation, and homeostasis: is their role beneficial, detrimental, regulator, or bystander
Key takeaway: Retatrutide delivers 24.2% weight loss (versus 14.9% for Wegovy and 20.9% for Zepbound) while maintaining a side effect profile thats actually better than Wegovy in several categories
Parra-Millan et al., 2018
Key actives per serving Acetyl-L-Carnitine (from acetyl-L-carnitine HCl): 1000 mg How to take Adults take 2 capsules once daily, preferably on an empty stomach