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What are the side effects
However, there are many unusual symptoms associated with vitamin B12 deficiency, and most will disappear after taking vitamin B12 long enough to get the stores up to a normal amount and have maintained stable levels of vitamin B12
Groups at genuine risk of deficiency include vegans, older adults, people with pernicious anaemia, those on long-term metformin, and individuals who have had gastric surgery
*Dietary Reference Intakes for Vitamin C, Vitamin E, Selenium, and Carotenoids*
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