No fractions
Another consideration is that sterile water by itself has no ions in some cases, injecting a large volume of pure water can cause discomfort (due to being hypotonic), so when used for injection, usually only small volumes are administered or the peptide is further diluted into a buffer or saline before use
Continue working with your healthcare provider on appropriate analgesic strategies
Research peptides are therefore supplied in lyophilised form, which is substantially more stable in transit and storage than a pre-mixed liquid
Mechanism in research literature The most-cited mechanistic finding is that BPC-157 activates the vascular endothelial growth factor receptor 2 (VEGFR2) in vascular endothelial cells (PMID 27847966)
The copper binds via the histidine imidazole ring, the peptide backbone, and deprotonated amide nitrogens, forming a stable, square-planar coordination complex