The illicit ketamine market has expanded beyond Asia, with rising use and emerging harms in new regions.Once concentrated in East and South-East Asia, several countries with time-series data (for example, the United Kingdom, Australia or the United States) have recorded an increase in the use of…
Similarly to most internationally controlled drugs, the use of NPS among adolescents is higher than among the general population, but the difference between adolescent boys and girlsis lower for NPS than for controlled drugs.Limited data suggest that NPS use is generally higher among school…
Limited data suggest stable or declining NPS use among young people, with some exceptions.Time-series data on NPS use among young people are scarce and largely limited to high-income countries.Where data are available, the use of NPS is generally stable or declining, as corroborated by recent…
Globally, the use of synthetic NPS continues to be lower than most internationally controlled drugs.Based on the available data – mainly from high-income countries – the use of synthetic NPS is generally lower than the use of drugs under international control. By contrast, the scarce data on plant-…
