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what is injectable vitamin b12 used for are the benefits of injection? Cyanocobalamin (b12) Injection 2,000 mcg/mL
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PMID: 11146367 Ng, F.M., et al

But "smaller" doesn't mean insignificant

BMJ 2008;336(7644):6015

It summarises areas of ongoing research and does not constitute medical advice, product claims, or recommendations for human use.
