You want maximum local tissue concentration for connective tissue support, which points toward subcutaneous injection near the target area or systemically
Common side effects include gastrointestinal issues like nausea, diarrhea, and constipation
Just like glycine residues, internal prolines in ACPs are important for conformational flexibility and interaction of the peptide with the membrane (61)
Gastrointestinal Health: BPC-157 has demonstrated protective effects on the gastrointestinal system, aiding in the healing of ulcers, inflammatory bowel diseases, and other gastrointestinal disorders [7]
doi: 10.1111/j.1365-2826.2004.01240.x 64 MessagerSChatzidakiEEMaDHendrickAGZahnDDixonJet al
For people who have dietary restrictions that could impact their exposure to this vitamin or for those who have health issues that affect their digestive system, injections can be a better choice as well