b12 injection vs b12 vitamin Dosage Vitamin B12 Injections - Vie
Description
Since the vials are 1ml each, one vial would be about 6 doses

(PubMed) Watanabe F, Yabuta Y, Tanioka Y, Bito T

You do not need to worry about oral B12 absorption being compromised by the same medication you are taking
(Contains description of formulation, indications, dosing, and storage recommendations)

(b) a low serum concentration of vitamin B12 with a normal folate concentration

Compared with the synthetic cyanocobalamin form found in many supplements, hydroxocobalamin retains in the body for longer and does not require the body to cleave off and excrete a cyanide molecule before use
