It is a tripeptide, which is a fancy way of saying it is made up of three specific amino acids: cysteine, glycine, and glutamate
It is widely repeated and thinly supported

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Since decreased Parasutterella relative abundance may accompany increased stress 80,81 , the increased Parasutterella relative abundance that occurred in this study following diet switch likely arose from the weight loss-mediated negative energy state
The standard protocol uses 2.8 mg per injection: 2 mg GHK-Cu + 400 mcg of BPC-157 + 400 mcg of TB-4
One thing I hear from whiny vegans is that B12 deficiency isnt exclusive to vegetarians