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  1. Vitamins and Minerals From A to Z - WebMD

  2. Listing of vitamins - Harvard Health

  3. Vitamin | Definition, Types, & Facts | Britannica

  4. What Are Vitamins? - Healthline

  5. Vitamins and Minerals – The Nutrition Source

  6. What are vitamins, and how do they work? - Medical News Today

  7. What Are Vitamins, and Why Are They Important? - Verywell Health

  8. Vitamins: MedlinePlus Medical Encyclopedia

  9. From A to K: Your Complete Vitamin Guide - Ask The Scientists

  10. Vitamins and Minerals | NCCIH - National Center for …