This report presents the outcome of a series of analysis on different social media, where users discuss on drugs and their effects. The aim of such an analysis is twofold. First, we automatically detect drugs and their effects. Secondly, we explore the struc- ture, the topic discussions, the evolution over time of widespread drugs’ forums and online drugs’ shops. The studies have been conducted within the European project Cassandra. 

File: http://www.iit.cnr.it/sites/default/files/TR%2012_2016.pdf