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FDA 101: Dietary Supplements | FDA - U.S. Food and Drug Administration
What Are Dietary Supplements? - Healthline
Dietary Supplements | FDA - U.S. Food and Drug Administration
Questions and Answers on Dietary Supplements | FDA
Dietary Supplement Fact Sheets
Dietary Supplements: What You Need to Know - Consumer
Background Information: Dietary Supplements - Consumer
Dietary supplement - Wikipedia
In brief: What are dietary supplements? - InformedHealth.org
Dietary Supplements: What You Need to Know - familydoctor.org