does b12 have to be an injection What Are Injections? And Are They Safe? Vitamin B12 Injections in Oakland,

When Injections Become Necessary The normal dose of B12 injection is important for treatment

Buysschaert M, Wallemacq PE, Dramais AS, Hermans MP

[95] Intramuscular or intravenous injection [edit] Injection of hydroxycobalamin is often used if digestive absorption is impaired, [2] but this course of action may not be necessary with high-dose oral supplements (such as 0.51.0 mg or more), [97] [98] because with large quantities of the vitamin taken orally, even the 1% to 5% of free crystalline B 12 that is absorbed along the entire intestine by passive diffusion may be sufficient to provide a necessary amount

Some people say they can cope on this regime but many of us cant, myself included

Furthermore, we show that mutations altering the putative ATPase domain of ABCD4 affect its function, suggesting that the ATPase activity of ABCD4 may be involved in intracellular processing of vitamin B12