Your Guide to Being Well and Staying Healthy
Browse the Knowledgebase
Diseases & Conditions
Tap into this interactive encyclopedia for instant access to information on more than 835 diseases and conditions.
Tests & Procedures
Information on more than 370 topics, featuring illustrations designed to clarify complex anatomy and procedures.
Drug Reference
This comprehensive drug reference answers your medication questions: 33,000 prescriptions, over-the-counter products, and neutraceuticals.
Herbs, Vitamins & Supplements
Discover medically validated uses for vitamins, minerals, amino acids, and other substances used as nutritional supplements.
Wellness Library
1,700 articles on common diseases and conditions, plus fitness, nutrition, safety, workplace issues, and parenting.
Symptom Checker and Care Guides
Health Tip of the Day
Caffeine and PMS
If you're bothered by premenstrual syndrome (PMS), try limiting your caffeine consumption. Researchers at Oregon State University have found that women who drink one or more caffeinated beverages a day are 30 percent more likely to suffer from PMS.