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WHO Model Formulary 2008
[2] Exposure to nitrous oxide (including recreational use) can cause functional B12 deficiency and worsen neurological manifestations
With B12 injections, you also have to be careful not to inject them into a vein
WritingReview & Editing: G.S., B.M
Swallow a whole tablet with a glass of water
For example, a doctor might prescribe the following: 100 micrograms daily for about a week Followed by every other day for seven doses After that, every three to four days for two to three weeks Once monthly until the deficiency is treated B12 injections require a prescription and can be administered at a doctor's office or at home with the approval of a healthcare provider
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