NNMT inhibition doesn't directly affect gut motility, so prolonged GI symptoms suggest an individual sensitivity rather than a universal mechanism
The honest status of AHK-Cu is a copper tripeptide with one ex-vivo / in-vitro study, a plausible mechanism borrowed from GHK-Cu, and no human data by any route [1] [2]
Without this important nutrient, cellular function would cease, and energy would plummet
Drug Design, Development and Therapy, 9, 2485-2499
Multifunctionality and Possible Medical Application of the BPC 157 Peptide-Literature [PMID: 40005999] Laboratory literature summary: Multifunctionality and Possible Medical Application of the BPC 157 Peptide-Literature and Patent Review
A 500 mcg dose from an untested online source delivers an unknown quantity of an unknown substance