National Center for Complementary and Alternative Medicine: the U.S. Federal Government's lead agency for scientific research on complementary and alternative medicine. Part of the National Institutes of Health.
The American Botanical Council: an independent, nonprofit research and education organization dedicated to providing accurate and reliable information on the responsible use of herbs and medicinal plants for consumers, healthcare practitioners and others.
Consumer Lab: Provides periodic reports of selected dietary supplements that have been tested for content and contaminants.
Dietary Supplement Labels Database: Offers information about ingredients in more than two thousand selected brands of dietary supplements. It enables users to determine what ingredients are in specific brands and to compare ingredients in different brands.
Natural Standard: an international research collaboration that gathers and presents data on complementary and alternative therapies.
U.S. Pharmacopeia: promotes the public health by developing and disseminating quality standards and information for medicines, healthcare delivery, and related products and practices.
National Institutes of Health – Office of Dietary Supplements: A large and informative website for healthcare professionals and the general public.
Quackwatch: Dr. Stephen Barrett is a physician who provides a guide to health fraud, quackery, and questionable cancer therapies. A good site to check the effectiveness or validity of an herbal product or “cancer diet” - gives you the “bottom line”.
National Council Against Health Fraud: Research based information on complementary and alternative medicine modalities, including clinical trials, health information and current research.