Vitamin D is critical for many body functions. We cannot get it from the sun during winter months and many common medications deplete it.

Here are some key things to look for in a children's multiple vitamin.

Gummy vitamins look fun and convenient and taste good, but are they really full of quality nutrients or just candy?

Studies show that a quality multiple vitamin has significant benefits, especially for your brain and cognitive function.

Immunomodulation by vitamin B12: augmentation of CD8+ T lymphocytes and natural killer (NK) cell activity in vitamin B12-deficient patients by methyl-B12 treatment.

Vitamin B12 status and rate of brain volume loss in community-dwelling elderly.

Relationship of cognitive function with B vitamin status, homocysteine, and tissue factor pathway inhibitor in cognitively impaired elderly: a cross-sectional survey.

Atrophic glossitis from vitamin B12 deficiency: a case misdiagnosed as burning mouth disorder.