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Live Well Vitamins & Lifestyle Guide

This content is selected and controlled by WebMD's editorial staff and is funded by GNC.

Multivitamins: Expert Information

Dr. Michael Smith, nutritionist Carolyn O'Neil, and WebMD Diet and Nutrition expert Kathleen Zelman MPH, RD, discuss multivitamins:

  • Insights into vitamins A, C, and D
  • How much of a vitamin is too much?
  • Which vitamins do you need as you grow older?
  • Prenatal vitamins
  • Where to store multivitamins
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