In cases of severe deficiency, a course of injections may be given over several weeks before transitioning to maintenance treatment
(PubMed) Lam-Tse WK, Batstra MR, Koeleman BP, et al
From a receptor standpoint, there is no overlap
For those who suffer from a vitamin B12 deficiency, injections will likely be recommended every 10 days as a build-up phase and then will continue as a monthly treatment or to be administered every 2 to 3 months in order to completely reverse the side effects of the deficiency
We do get a large volume of phone calls daily
It binds to transport proteins, primarily transcobalamin II , which delivers B12 to tissues throughout the body