Vitamins are natural substances that the body needs to grow, develop, and function normally. Vitamins are contained in food; a well-balanced diet usually provides all of the vitamins required. However, there are times, such as during pregnancy and childhood, when the body needs more vitamins than usual. During certain illnesses, the body either cannot get or cannot efficiently use all of the vitamins it needs.
Multivitamins are prescribed for patients who need extra vitamins, who cannot eat enough food to obtain the required vitamins, or who cannot receive the full benefit of the vitamins contained in the food they eat.