Understanding and addressing the current opioid crisis requires knowledge of endogenous opioids (endorphins and enkephalins), but there is now evidence for a benzodiazepine crisis. Are there endogenous benzodiazepine-like substances—and what do they do? How do they affect antianxiety drugs and their adverse effects? Do they explain enigmatic prolonged benzodiazepine withdrawal syndrome? This book raises important questions about the clinical consequences of ignoring the existence of or understanding the potential influence of endogenous benzodiazepines on the therapeutic effect of benzodiazepines, their adverse effects, and the problems of withdrawal from them and other benzodiazepine receptor agonists. FEATURES Discusses endogenous benzodiazepine-like substances—what do they do, and do they affect antianxiety drugs and their adverse effects? Presents information on enigmatic prolonged benzodiazepine withdrawal syndrome Describes the compounds acting at the BDZ binding sites, both exogenous (classical BDZ drugs and BDZ from food and plants) and endogenous (endozepines) Assesses the putative interactions in physiology, pathology, and pharmacology of the compounds acting at the BDZ binding sites Dr. Raffa is Adjunct Professor at the University of Arizona College of Pharmacy and Professor Emeritus at Temple University School of Pharmacy. He has co-authored or edited several books on pharmacology and thermodynamics, is a co-editor of two journals, is a past president of the Mid-Atlantic Pharmacology Society, and is the recipient of research and teaching awards. Dr. Amantea is Associate Professor of Pharmacology at the Department of Pharmacy, Health and Nutritional Sciences of the University of Calabria (Italy), where she is the leader of the Stroke Research Unit at the Section of Preclinical and Translational Pharmacology operating in the frame of the Italian Stroke Organization (ISO) Basic Science. She is a member of the Editorial Board and the Guest Editor of the 2016 Neuroscience section of Current Opinion in Pharmacology (Elsevier), and the founder and the editor of the CRC Press Frontiers in Neurotherapeutics series.