Copper in BPC157 products is linked to collagen synthesis, but excessive intake can cause inflammation and counteract anti-aging effects.

“many of the products that contain bpc157 by the way also contain copper copper is a trace mineral it's found in your diet there is some evidence that copper is important for some of the collagen and other elements of skin synthesis Pathways and so the mechanistic logic and the biochemical logic is there on paper however it's also clear that ingesting too much copper can induce an inflammatory response and would lead to the exact opposite desired effect that people who are using copper and usually copper bpc containing products are taking them for which is to Halt or reverse the appearance of Aging in their skin”