Each peptide is different
For patients with good gut function and no absorption issues, it is adequate
Jacob R, Barrett E, Plewe G, Fagin KD, Sherwin RS
(7) BPC-157 Peptide and Tissue Damage A study was conducted to understand the extent of the angiogenic potential of the peptide beyond local wounds, ligaments, and GI tract wounds and to study its action on multiple gastrointestinal lesions on the pancreas, liver injuries, heart damage, endothelium damage, and blood pressure
According to the Mayo Clinic, parenteral vitamin B12 therapy is clinically indicated for treating deficiency caused by pernicious anemia, gastrointestinal disorders such as tropical sprue, and conditions resulting in malabsorption like pancreatic insufficiency