how should bpc 157 be taken Heal or Harm: Body Protective Compound-157 in the Gray Zone BPC-157 Oral vs Injection: Benefits,
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DOI: 10.1080/15563650.2019.1606432 Aroda VR et al, "Long-term metformin use and vitamin B12 deficiency in the Diabetes Prevention Program Outcomes Study." Journal of Clinical Endocrinology and Metabolism, Feb

Int J Drug Deliv 4 40.Pawar PP, Ghorpade HS, Kokane BA (2018) Sublingual route for systemic drug delivery

Vitamin B12, like folate, contributes to the formation of nucleic acid, which may increase hair follicle development
That being said, its very easy to take two supplement gummies and consume 125,000% of the recommended dietary allowance (RDA)

(178) Osteogenic effect of a gastric pentadecapeptide BPC-157 on the healing of segmental bone defect in rabbits: a comparison with bone marrow and autologous cortical bone implantation

Pharmacokinetic (PK) studies are performed to determine half-life
