They're not at the cell surface, they're inside the cell and they're binding to two other proteins
BPC-157 (Peptides, Part 2): What the Evidence Shows The compound is unapproved by the FDA, the demand is real, and the clinical reasoning that sits between those two facts Two distinct biological profiles depending on how its taken, a regulatory classification that places it outside standard compounding protections, and an internet reputation that outpaces both
mild injection-site reactions were the only notable adverse events, with no changes to glucose or hormone panels
Research Dosing Protocols Russian clinical protocols and established research-community practice converge on a dose range of 250 to 1000 mcg per administration, one to three times daily, delivered intranasally
Link National Heart, Lung, and Blood Institute