Because they work through entirely different biological mechanisms -- sermorelin through pituitary GH stimulation and BPC-157 through tissue healing pathways -- they can be used concurrently under medical supervision
Tanimura Y, Aoi W, Mizushima K, Higashimura Y, Naito Y (2019) Combined treatment of dipeptidyl peptidase-4 inhibitor and exercise training improves lipid profile in KK/Ta mice
Thymogen Alpha-1 targets immune function
If a research protocol calls for a different ratio for example, 50mg GHK-Cu with only 5mg BPC-157 the blend is not adjustable
First efforts should be through food, and then supplementation, which offers a reliable path to fill in the gaps
Choosing your concentration Standard GHK-Cu dosing protocols use 1-3mg per injection