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Furthermore, a crossover study of intranasal vitamin B12 versus vitamin B12 injections is needed
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Category 2 designation means the substance presents "safety concerns" and is prohibited from being used in compounding by licensed pharmacies
How can I prevent a vitamin B12 deficiency
ACS Chem Biol 11:981991
In my survey of 2232 people with Hashimotos, 33 percent reported that they had tested as deficient in this all-important vitamin, and 76 percent said they felt better after taking a B12 supplement
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