where do they inject b12 Injecting Where to Inject Vitamin B12

not for safety or efficacy guidance

Those with cardiovascular disease, renal impairment, or haematological disorders should seek medical advice before commencing treatment

Excess B12 does not generally cause direct harm to the kidneys or liver in people with healthy organs

4 Aside from those with genetic methylation defects in the metabolism of vitamin B12 and folic acid, our patients have excellent results with a sublingual vitamin B12 that dissolves slowly under the tongue

Peer review Peer review information Nature Metabolism thanks Xun Huang and the other, anonymous, reviewer for their contribution to the peer review of this work

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