usapl bpc 157 rules BPC-157 Dosage Protocol: Injection Guide BPC-157: Experimental Peptide Creates Risk
Description
This reduces binding affinity to GLP-1 receptors, meaning each molecule is less effective at triggering the biological response you need

Teichman et al

Rolig AS, Mittge EK, Ganz J, Troll JV, Melancon E, Wiles TJ, Alligood K, Stephens WZ, Eisen JS, Guillemin K (2017) The enteric nervous system promotes intestinal health by constraining microbiota composition

Jun 2020;10(6):e01633

And the answer, frustratingly, is "it depends." Different peptides have different shelf lives in solution
