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The Supplement Handbook: A Trusted Expert's Guide to What Works & What's Worthless for More Than 100 Conditions

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Nearly half of Americans use supplements—and many more are curious about them—yet questions abound. Will feverfew help my migraines? Are there any vitamins that will keep my skin clear? Does lysine really prevent cold sores? Are there herbs I can take to boost my mood? Are any of these things safe?

Mark Moyad, MD, MPH is the only physician in the United States who has an endowed position to study vitamins, minerals, herbs, and other supplements. For the past 25 years, he's been researching s...