Cyanocobalamin : Synthetic form, requires conversion to active B12, longer shelf life, lower cost Methylcobalamin : Bioactive form, immediate utilization, preferred for neurological symptoms, more expensive Hydroxocobalamin: Used for cyanide poisoning, longest-acting Standard dose: 1000mcg/ml Routes: Deep IM (gluteal/deltoid) or subQ (abdominal) Loading phase: Daily/weekly for 1-4 weeks Maintenance: Monthly or every 3 months (hydroxocobalamin) No need for aspiration before injection Oral absorption requires intrinsic factor (absent in pernicious anemia) and healthy ileum
Its involved in the metabolism of every cell of the human body, especially affecting DNA synthesis and regulation, fatty acid synthesis, and energy production
10.3896/ibra.1.53.1.12 225 PengY.ZongY.WangD.ChenJ.ChenZ.-S.PengF.et al (2023)
Searches of clinicaltrials.gov for BPC-157 return only a small number of registered studies, predominantly observational or compounded-product registries rather than randomized interventional trials with peer-reviewed protocols and pre-registered outcome measures