Single vitamin supplements
are designed for those who are in need of a particular vitamin, rather
than the full multitude of vitamins that are contained in a
multivitamin supplement. Single vitamins can be useful for those who
have a specific dietary deficiency, as a single vitamin supplement may
have higher dosages of a certain vitamin than others. As different
vitamins work towards different parts of the body and metabolic
process, it also allows the user to target their supplementation at a
particular benefit or health issue. Vitamins function in a variety of
ways throughout the body, and a vitamin deficiency can be cause a wide
variety of health issues.