are there any side effects to bpc 157 Is BPC-157 Banned? Oral vs. Injectable Forms Explained The Hidden Risks of BPC‑157:

Researchers who extend BAC water use beyond 28 days post-puncture or store it at room temperature are reconstituting peptides with a solution that no longer provides antimicrobial protection

Oral B12 supplements have to pass through the gut, and absorption can be limited especially if you have digestive issues, take certain medications like metformin or antacids, or simply have low stomach acid

doi:10.3390/ph17081081

and reports other support from Travere Therapeutics Inc, the Doris Duke Charitable Foundation, Bayer AG, AstraZeneca, Novo Nordisk, The George Institute for Global Health, CareDx and KBP BioSciences, and personal fees from Boehringer Ingelheim, Bayer Pharmaceuticals and Eli Lilly