One in ten Americans suffers from chronic insomnia. Many receive sleeping pills and over-the-counter sleep aids, at an annual cost of over $40 billion. There are many different medicines, in what can seem like a bewildering variety. In this book, Dr. Mendelson draws on his experience of 40 years doing research and treatment of insomnia to explain how sleeping pills work, as well as their benefits and drawbacks, and alternative non-medicine approaches. Lavishly illustrated and written for ease of understanding, this book is a useful guide for patients and trainees, and a resource for review and quick look-up of information for all providers.