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Because vitamin B 12 in supplements is not bound to protein, and because intrinsic factor (IF) is still available, the absorption of supplemental vitamin B 12 is not reduced as it is in pernicious anemia
Safety and tolerability of the hexadecapeptide AOD9604 in humans
In some cases, the physician might recommend these vitamin supplements for patients having trouble absorbing vitamin B12 through food
Stay hydrated to maximize the benefits
headaches or dizziness
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