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Headache or nausea is uncommon
For anyone feeling less than their best, B12 injections are the missing piece in their health puzzle
A study in the Journal of the American Geriatrics Society showed that vitamin B12 supplements improved cognitive function in older adults with deficiency anemia
Studies directly comparing the two forms note that up to three times as much cyanocobalamin is excreted in the urine compared to methylcobalamin
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