Novel Psychoactive Substances: Classification, Pharmacology and Toxicology, Second Edition provides readers with a comprehensive examination on the classification, detection, supply and availability of novel psychoactive substances, otherwise known as "legal highs." The book covers individual classes of novel psychoactive substances that have recently emerged onto the recreational drug scene and provides an overview of the pharmacology of the substance and a discussion of their associated acute and chronic harm and toxicity. This second edition addresses drugs new to the scene, with completely updated and revised chapters. Written by international experts in the field, this multi-authored book is an essential reference for scientists, clinicians, academics, and regulatory and law enforcement professionals. Includes chapters written by international experts in the field Presents a comprehensive overview on the classification, detection, availability and supply of novel psychoactive substances, in addition to the pharmacology and toxicology associated with the substance Offers a single source for all interested parties working in this area, including scientists, academics, clinicians, law enforcement and regulatory agencies Provides a full treatment of novel psychoactive substances that have recently emerged onto the recreational drug scene, including amphetamines and the synthetic cannabinoid receptors in ‘spice’ and ‘K2’

This volume is designed to feature the pharmacology of new psychoactive substances, legislative aspects, information exchange including epidemiology, and clinical, forensic, and analytical toxicology in order to facilitate the understanding of this complex and rapidly developing phenomenon.

Research into the processes of tolerance and sensitization has escalated at a substantial rate in recent years, presumably because of the fundamental importance of understanding the long-term, as opposed simply to the initial, acute effects of drugs. The rapid of such research in recent years is documented c1early by growth the editors in the introductory chapter to this text. However, despite the fact that there is a very large amount of literature concemed with the effects of long-term drug treatment, there is, to the best of our knowledge, no published text that has ever attempted to integrate some of the many diverse findings that have been made in this area. Basic research has uncovered a num ber of different mechanisms by which tolerance and sensitization to drugs can develop. Such mechanisms are of very different types, involving psychological behavioral, metabolic, neuronal, and subcellular processes. Because of the complexity of each of these different types of mechanisms, with few exceptions, individual re searchers usually tend, understandably, to concentrate on their own specific areas of expertise, paying relatively little attention to rele vant research occurring in other areas. Consequently, they neglect or simply ignore the important question of the relative importance of the specific mechanism that they are studying, and the related question of the possible interrelationships that may exist between different mechanisms for the production of tolerance and sensitiza tion.

This volume brings together the latest basic and clinical research examining the effects and underlying mechanisms of psychedelic drugs. Examples of drugs within this group include LSD, psilocybin, and mescaline. Despite their structural differences, these compounds produce remarkably similar experiences in humans and share a common mechanism of action. Commonalities among the substances in this family are addressed both at the clinical and phenomenological level and at the basic neurobiological mechanism level. To the extent possible, contributions relate the clinical and preclinical findings to one another across species. The volume addresses both the risks associated with the use of these drugs and the potential medical benefits that might be associated with these and related compounds.

An increasing number of novel psychoactive drugs are currently available and sold as 'legal highs' or 'research chemicals'. These New Psychoactive Substances (NPS) constitute a broad range of hundreds of natural and synthetic drugs, including synthetic cannabinoids, synthetic cathinones, synthetic opioids and other classes, which use has resulted in a significantly growing number of intoxication and mortality, as reported by emergency and poison centres from all over the world. Definition of “NPS” includes any substance that has recently become available and has been designed purposely to replace illegal drugs, although not necessarily of new synthesis. Use of NPS is dramatically increased in the last decade and represents a serious risk for the public health. Their ever-evolving chemical structure, the possibility to distribute in real time through the Internet and social networks information about their use and effects have dramatically challenged public health and drug policies internationally. NPS recently attracted great attention, but most are still unregulated and proposed online as legal alternatives to traditional illicit drugs. Unfortunately, this area is still poorly investigated and very limited information are available so far on their nature and potential risks. The phenomenon of NPS requires multi-national and multi-disciplinary collaborations to improve our knowledge on this changing drug market, to share information and define good practices at a global level. Political and educational efforts are indispensable to regulate this mutable scenario and to inform the public about health consequences of NPS use. Clinicians and emergency staff should be aware that NPS may cause severe health consequences and unexpected adverse effects, and be informed on how to recognized and treat specific intoxication cases. Considering the widespread use of NPS and paucity of information about their toxicology and pharmacology, this Research Topic will be useful to understand the new trends in the scenario of drug use, abuse and addiction to inform professionals and general public about the health problems caused by NPS and to help drug-control policies to adopt suitable control measures.

This incisive book offers an epidemiological study of road users’ consumption of psychoactive substances in Nigeria. It examines psychoactive drug screening and the use of driving simulators to evaluate skills impairment after drinking alcoholic beverages. Portable electronic digital screening devices such as “Oral Screen,” along with other screening devices were used to establish the prevalence of substances of abuse among road users in some selected cities in Nigeria. Blood, saliva, urine, and other biological fluids were screened. Skills impairment, characterized by unsafe driving actions based on the level of blood alcohol concentration (BAC), was evaluated using a driving simulator. The findings were validated by application of a Field Impairment Test (FIT) or modified clinical test of impairment. The implication of the results on everyday highway utilization and the best approach for research into screening for psychoactive drugs are highlighted, along with several recommendations to enhance highway safety.