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[21] Oral vitamin B supplements can be bought without a prescription, but the injectable form is regulated and dispensed as a prescription product
A vitamin B12 shot is a vitamin injection that may be prescribed by your doctor to help treat a vitamin B12 deficiency
The B12 injection is administered every week or every few weeks for optimal results
When you take vitamins orally, your digestive system has to break them down, and only a fraction actually makes it into your bloodstream
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