vitamin b12 injection for pregnancy at a Licensed Pharmacy Vitamin B12 Injection: Uses, Benefits,

Description Bacteriostatic Water for Injection (BWFI) is sterile water preserved with 0.9% benzyl alcohol, a widely used antimicrobial preservative that inhibits bacterial growth in multi-use vials

Barisic et al

You do not need to worry about oral B12 absorption being compromised by the same medication you are taking

Will all my B12 deficiency symptoms resolve with treatment

Additionally, the absorption process itself is competitive, with amino acids and other nutrients vying for uptake in the small intestine

Because B12 is water-soluble, your body uses what it needs and passes most of the excess, and there is no established upper intake limit because harmful effects from high intake have not been well documented