The vial is at its cleanest and most protected
"Pentadecapeptide BPC 157 reduces bleeding and thrombocytopenia after amputation in rats treated with heparin, warfarin, L-NAME and L-arginine." PLoS ONE, 2020
In addition, those who take certain medications may be at increased risk for B12 deficiency, per Healthline
But with the rise of these treatments, one question remains front and center: How safe are vitamin injections
A: Multiple pathways: GH receptor upregulation, nitric oxide system modulation, VEGF-promoted angiogenesis, and direct inflammatory cytokine interaction
Other clues that your compounded prescription may not be legitimate: It does not require a prescription