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These may cover just adults not children
Serious adverse effects have not been widely reported, but long-term safety data in humans is lacking
Vitamin B12 Recommended Dose: UK Guidance for Adults and Children Vitamin B12 (cobalamin) is an essential water-soluble vitamin vital for red blood cell formation, neurological function, and DNA synthesis
its rationale comes from how the four component mechanisms fit together
Ingredient amounts, added vitamins, and preparation methods can vary widely across providers
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