Convenience: Injections takes just 10-15 minutes administered in an in-office visit
The intrinsic factor then binds with B12, facilitating the uptake of B12 in the small intestines.[ref] Without intrinsic factor, you cant absorb B12 from animal proteins
The " big 3 " are minoxidil , finasteride (or another DHT blocker ), and ketoconazole (e.g
The following is taken from the section, "How should treatment be given", from the peer-reviewed medical-journal article, "The Many Faces of Cobalamin (Vitamin B12) Deficiency": [Start quote] For parenteral therapy in cases of megaloblastic anemia, it has been advised to administer 1000 mg hydroxocobalamin IM twice weekly for a period of 5 weeks, and the dose is reduced to 1000 mg IM every 2 months thereafter
Proceedings of the National Academy of Sciences, 2008