Because they act through non-overlapping mechanisms, some protocols examine them in combination or parallel though combination research should have a clear mechanistic rationale
Injections bypass the gastrointestinal tract and are the standard treatment for pernicious anaemia and severe deficiency in the UK
The clinic answer In a UK clinic, cold-chain storage, stock rotation and expiry checks are routine, so you never have to think about any of this
377(2):153159 Gastric pentadecapeptide body protection compound BPC 157 and its role in musculoskeletal tissue models Bock-Marquette I, Maar K, Maar S, Lippai B, Faskerti G, Gallyas F Jr, Olson EN, Srivastava D., International Immunopharmacology , 2023