Introduction Kristina Adorjan, Sharon L. Walsh, Thomas G. Schulze Chapter 1. New psychoactive substances: definition and classification Katarzyna Kuczynska and Jolanta B. Zawilska Chapter 2. The Pandemic of NPS in Society: an overview of the Social Context Elisabeth Prevete, Giuseppe Bersani and Ornella Corazza Chapter 3. Analytical and Biochemical Evaluation of New Psychoactive Substances Jürg Gertsch Chapter 4. Stimulant NPS Fabrizio Schifano, John Martin Corkery, Valeria Catalani, Stefania Chiappini, Davide Arillotta, Alessandro Vento, Norbert Scherbaum, and Amira Guirguis Chapter 5.

New psychoactive substances. Challenges, consequences and treatment approaches Synthetic Cannabinoid Receptor Agonists (SCRAs) Dr. Philippe Pfeifer and Dr. Katharina Elisabeth Grafinger Chapter 6. New Psychoactive Substances: Hallucinogens Leila Soravia, Tobias Bracht, Niklaus Denier, Yasmin Schmid, and Felix Müller Chapter 7. Depressant NPS - Synthetic Opioids Vinz K. Schmid, Boris B. Quednow, and Saraliane Kroll Chapter 8.

NPS related specialities Kristiane Siste, Rama Kamal, Alexander Baldacchino, Hussien Elkholy, Roshan Bhad, Hamed Ekhtiari, Christian G. Schütz, and Sophia Achab Chapter 9. Concluding Remarks Kristina Adorjan, Sharon L. Walsh, Thomas G. Schulze.