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Fast Facts B12 injections can be more effective than pills in certain patients who have trouble absorbing vitamin B12
B12 B12 Shots Benefits When you swallow a B12 supplement, its hard to know how much of the nutrient you actually absorb, says Foxx
Follow-up blood work is the clinical gold standard, and we typically re-test after a set number of injections to confirm your levels are rising into a healthy range
Then reinsert the needle and syringe an inch or so away from where it was before
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