The latter is considered less efficient and may bring about toxic metabolic byproduct formation
(PubMed) Miyake A, Friedman NP, Emerson MJ, Witzki AH, Howerter A, Wager TD
BPC-157 appears to be a synthetic pentadecapeptide, TB-500 mirrors the endogenous thymosin beta-4, GHK-Cu is a tripeptide with a copper ion, and KPV represents the C-terminal segment of alpha-melanocyte-stimulating hormone
BPC-157 influences multiple growth factor pathways including VEGF and EGF, promoting angiogenesis, enhancing tissue regeneration, modulating inflammation, and supporting overall healing capacity at cellular levels
Applied and environmental microbiology 72 , 50695072 (2006)
But the real problem is degraded medication