This book gives a comprehensive overview about different neurotransmitter/peptide systems involved in craving and relapse behavior and critically describes the clinical application of new anti-craving and anti-relapse compounds. The editors compiled the most recent available preclinical and clinical data, offering a thorough picture on modern relapse prevention. Undoubtedly, this book sets out to provide an all-encompassing overview about the topic, which will be of interest to the preclinical researcher, the clinician as well as to the patient who wants to learn more.