b12 injection is iv or im Sandoz Vitamin Injectable Solution - 1000 mcg/10 mL No.1 Best Super B12 IM

Oral administration of high-dose vitamin B 12 (1 to 2 mg daily) is considered as effective as intramuscular administration for correcting anemia and neurologic symptoms Despite many studies suggesting oral administration of vitamin B 12 to be easy, effective and less costly than intramuscular administration, debate surrounds the effectiveness of the oral route

If youre new to the issue, Vegan B12 Deficiency: Putting It into Perspective, and Safest Source of B12 are good places to start

Research/educational use only

[DOI] [PubMed] [Google Scholar] 169.Wang, G

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Omstead DT, Mejia F, Sjoerdsma J, Kim B, Shin J, Khan S, et al