A 0.5 mL syringe is the middle option, and the 1 mL syringe has the largest capacity in this group
Common side effects include mild nausea, vomiting, and diarrhea, which tend to decrease over time as the body adjusts
The 28-day (4-week) stability window is the limiting factor
It is an easy way to get actionable information without extra steps
A broader review in PMC also discusses BPC-157 as a stable gastric pentadecapeptide with substantial preclinical literature across skin wounds, burns, fistulas, tendon, ligament, muscle, bone, nerve, and blood vessel healing models
Injections bypass the digestive tract, which makes them more effective for people with absorption issues or severe deficiencies