Vitamins are nutrients your body needs in small amounts to work normally, and food supplies most of them. This department covers multivitamins, vitamin A, B-complex, B12, vitamin C, vitamin D3, vitamin E, vitamin K2, folate and prenatal vitamins, for a simple daily multi or a single nutrient.
What to look for on the label
Check the form and the amount per serving. Vitamin D may be listed as D2 (ergocalciferol) or D3 (cholecalciferol), in mcg with IU in parentheses (1 mcg = 40 IU). Folate is listed in mcg DFE. Compare each % Daily Value with what you already get from food and other supplements.
Good to know
Vitamins A, D, E and K are fat-soluble and can build up in the body, so stay within the Upper Intake Level. Vitamin K can affect how warfarin works. People who eat no animal foods generally need B12 from fortified foods or a supplement. Related: Minerals, Immune Support and Women's, Men's & Kids' Health, plus our vitamin D in winter guide and How to read a supplement label.
Frequently asked questions
Do I need a multivitamin?
Many people meet their needs through food. A multivitamin can help fill gaps but doesn't replace a varied diet; ask your doctor whether one suits you.
What is the difference between vitamin D2 and D3?
Both raise blood levels of vitamin D, and D3 tends to raise them more and for longer. D2 comes from plants or yeast; D3 usually from lanolin or lichen.
Can I take a multivitamin with single vitamins?
Yes, but add up the totals: a multi plus single nutrients can exceed the Upper Intake Level.
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