- Hyla Cass, M.D.
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User's Guide to: Herbal Remedies
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In this overview of the most popular herbs, Hyla Cass, M.D., describes the top ten herbal supplements. Among them are echinacea to boost the immune system during cold and flu season, ginseng to increase energy levels, St. John's wort to elevate mood, and saw palmetto to prevent prostate disorders. Dr. Cass also provides clear guidelines for how to safely use herbal remedies.