Its also been speculated that oral methylcobalamin or injected hydroxycobalamin may be preferable in smokers, but that hasnt been conrmed
Existing bald areas may not fully regrow with medication alone
What to expect When you receive injections of B12 in your doctors office, your doctor will have considered the amount of the vitamin that is appropriate for you
(PubMed) Vogiatzoglou A, Refsum H, Johnston C, et al
Your provider reviews medical history, medications, pregnancy status, and other safety factors before prescribing
Discussion Significance of the study To our knowledge, this is the most comprehensive network meta-analysis comparing the efficacy of SL, IM, and oral routes of administration of vitamin B12 in patients with vitamin B12 deficiency