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Many oral cyanocobalamin formulations are also available to purchase over the counter, in health food shops and online as dietary supplements
Rankings are based on: We evaluated the strength and consistency of available research evidence for each compound
This data comes from randomized trials published in the New England Journal of Medicine and Nature Medicine
Clinical research has generally demonstrated favorable tolerability, though individual responses vary
Treatment and prevention involve eating meat, fish, and dairy products or foods fortified with B12, like some breakfast cereals and breads
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