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For those following vegan or vegetarian diets, fortified foods or supplements become essential sources of B12
Su efecto desaparece en unas horas y permite disfrutar de los beneficios sin un entumecimiento prolongado que pueda interferir con las actividades diarias
Lutz T.A
In people who are deficient, on the other hand, restoring B12 can meaningfully improve energy and how they feel day to day (a clinical review of B12, chronic fatigue, and injection treatment)
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