"According to multiple sources, drug users in Russia have numbered between 7.3 to 8.5 million for the past several years. At an October 2017 Saint Petersburg conference, experts reported that in 2016, there were 637,482 people incarcerated in Russia, for which 63 percent were for drug offenses, and 10 percent of whom are HIV positive. In addition, 54.5 percent of Russian narcologists list religion as 'the most suitable therapy' for drug addiction, and as a result, drug addiction in Russia is typically treated with antipsychotic drugs suited to treat schizophrenia, instead of agonist and antagonist agents. Analysts have also ascribed spotty progress and metrics to poor interagency and inter-sectoral cooperation, and to the lack of a cohesive national rehabilitation program."

Source

United States Department of State Bureau for International Narcotics and Law Enforcement Affairs, "International Narcotics Control Strategy Report: Volume I: Drug and Chemical Control," Washington, DC: March 2018, p. 257.