Patch testing matters more for sensitive skin users
(4) Fangru Jiang, Yanan Wu, Zhe Liu, et al (2023) Synergy of GHK-Cu and hyaluronic acid on collagen IV upregulation via fibroblast and ex-vivo skin tests Journal of Cosmetic Dermatology, 2023 Sep, Volume 22 (Issue 9), Pages 2598-2604
The sole human study identified by the 2025 systematic review was a retrospective case series of 12 patients who received intra-articular BPC-157 injections for knee pain
Its primary physiological functions include promoting glucose-dependent insulin secretion, enhancing hepatic glycogen synthesis, and increasing the buffering capacity of adipose tissue for lipids
You'll also get tested for hepatitis B and C
Consider also the issue of informed consent