Dietary and Herbal Supplements
A dietary supplement, as defined by the Dietary Supplement Health and Education Act (DSHEA), is a product that:
- Is intended to supplement the diet
- Contains one or more dietary ingredients (including vitamins, minerals, herbs or other botanicals, amino acids, and certain other substances) or their constituents
- Is intended to be taken by mouth, in forms such as tablet, capsule, powder, softgel, gelcap, or liquid
- Is labeled as being a dietary supplement.
How much do you know about interactions between drugs and dietary supplements? Test your knowledge and learn more about how supplements may affect your medicines in this interactive module from the U.S. National Institutes of Health.
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This page last modified January 26, 2018