More than a quarter of a million patients are admitted to hospital in the United Kingdom alone because of harmful effects after taking drugs; a recent BMA report suggests that these cases cost the NHS around £466m or $870m a year. Updated and improved, the twelth edition of this text stands out as the most widely acclaimed resource on adverse reactions to drugs, not just for practicing dermatologists, but also for primary care physicians and hospital consultants. It perfectly answers the busy physician's need for a comprehensive, authoritative and independent guide to the known adverse effects to newly approved, commonly prescribed and over-the-counter drugs, herbals and supplements.