This book is about the science of drugs. It covers the basics of how different drugs work in the body. It also describes how a medicine is developed from its discovery to its launch as a treatment for patients. All the drugs of everyday life are described - antibiotics, painkillers, hormones, anti-cancer and heart drugs, antidepressants and sleeping pills. Recreational drugs - from caffeine to cocaine - are covered too, as are food supplements and herbal medicines. Taking an accessible approach, Susan Aldridge clearly describes the science behind how drugs work.