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Improves Metabolism and Helps With Weight Loss A deficiency of the B12 vitamin causes anemia
Though you may feel sleepy, you shouldnt feel ill (nauseous and groggy) the way you would with general anesthesia
Mechanistically and clinically, theyre not close cousins
Insider's takeaway The Institute of Medicine has not established a tolerable upper intake level of B12 because studies show no adverse health effects when taking excess levels of B12, either through food or supplements
However, current data indicate that the optimum obtainable neurologic response may be expected with a dosage of vitamin B12 sufficient to produce good hematologic response
The controlled conditions of clinical research also differ from real-world use
