National Center for Complementary and Integrative Health (NCCIH)
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Dietary and Herbal Supplements

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Woman comparing two dietary supplement bottle in a store

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A dietary supplement, as defined by the Dietary Supplement Health and Education Act (DSHEA), is a product that:

For Consumers

Ongoing Medical Studies

For Health Professionals

Clinical Practice Guidelines

Continuing Education (CME, CEU)

Scientific Literature

This page last modified September 24, 2017