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Vitamins Reference

Reference of vitamins, their functions, food sources and deficiency symptoms.
Find a Vitamin
14 vitamins
Vitamin DetailsPick a vitamin to see its details.

Select a vitamin from the list - or search by name or symptom - to see what it does, what a deficiency looks like, and where to get it from food.

Tool Introduction

The Vitamin Guide is a quick reference for the vitamins your body needs: what each one does, the symptoms of a deficiency, and the foods that provide it. Use the search box to look up a vitamin by name or by a symptom you are experiencing, or filter by water-soluble (B vitamins and C) and fat-soluble (A, D, E, K).

RDA values follow the US Dietary Reference Intakes for healthy adults. This guide is for general information only and is not medical advice - if you suspect a deficiency or are considering supplements, talk to a doctor or a registered dietitian first.