Multivitamins are supplements that contain an assortment of nutrients required by the human body. The specific nutrients and the amounts of each provided per serving vary from product to product. Most contain doses of all or most of the 13 essential vitamins: A, C, D, E, K, thiamine (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), pyroxidine (B6), biotin (B7), folate (B9) and cobalamin (B12). In addition, most formulas also include minerals, such as potassium, calcium and iron. To learn more about what each supplement provides, you can check out the product descriptions.

Multivitamins are taken to provide vitamins to the body that aren't taken in through the diet. Multivitamins may also help when someone has a vitamin deficiency. Overall, multivitamins replenish the body's supply of vitamins to ensure you're getting all the vitamins you need.