These are injectables like BPC-157, which is extremely popular online for its reputed ability to heal tendons, ligaments and muscles, and TB-500, which is believed to reduce inflammation and improve wound healing
Heres an honest look at what the research shows, where the evidence is strong, and where its still early
BPC-157 activates ERK1/2, VEGFR2, and nitric oxide signalling pathways to promote angiogenesis and fibroblast activity
GCL is specific for the glutamyl moiety and is regulated physiologically by: (a) non-allosteric feedback competitive inhibition by GSH (Ki=2.3mM), which involves binding of GSH to the glutamate and another site on the enzyme [8, 9] and (b) availability of its precursor, cysteine [1] .The apparent Km values of GCL for glutamate is 1.8 mM, and for cysteine and 0.10.3 mM [9]