bpc 157 human clinical trials evidence review 2024 2025 Stable Gastric Pentadecapeptide as a Therapy and Safety Key: A Special Beneficial Pleiotropic Effect Controlling and Modulating Angiogenesis and the NO-System BPC-157 and the gut–brain axis:
Description
(4) Heffernan MA, Thorburn AW, Fam B, Summers R, Conway-Campbell B, Waters MJ, Ng FM

The peptide appeared to lead to a significant attenuation of TBI-induced damage and improved early outcomes based on the observed experiments

There are practical reasons too: B can be unstable if mixed with certain other vitamins in solution, and dosing schedules for B deficiency (pernicious anemia, for instance) may differ
Children under 5 years old and people who have weak immune systems may not show any symptoms at all
Using multiple peptides together can enhance outcomes by addressing different pathways involved in repair, inflammation, and recovery