how to give vitamin b12 injection in arm Safe Guide at Home Vitamin B12 Dosages: Your GoodRx
Description
Though they can all be directly ingested from these foods, they most effective when taken in larger quantities, either by oral supplements or by injection

1000 g IM daily or every other day for 12 weeks, then 1000 g once weekly for 48 weeks
No dilution, no shortcuts - the full separation profile is documented and published

Vitamin B12: oral compared with parenteral
