pfizer b12 injection Cyanocobalamin Vitamin 1000 mcg — Mountainside Medical Cyanocobalamin (B12) Injection 1000 mcg/mL,

Sun C, Liu X, Wang B, Wang Z, Liu Y, Di C

doi:10.1080/14740338.2022.2049753

For Roux-en-Y gastric bypass patients, the ASMBS says, Vitamin B-12 is very poorly absorbed when swallowed as a pill

CAS Number: 68-19-9 (Cyanocobalamin reference form) Molecular Formula: C63H88CoN14O14P Molecular Weight: ~1355.38 g/mol Compound Classification: Naturally occurring cobalt-containing corrinoid vitamin Specifications Form: Aqueous solution Concentration: 1000 g/mL (nominal) Vitamin B-12 Volume: 10 mL Filtration: 0.2 m sterile membrane Preservative: 0.9% Benzyl Alcohol Container: Sterile glass vial Appearance: Red solution Purity: Manufactured to defined specification (98% assay cyanocobalamin

We also look at what some of the common side effects are and how common they occur