Increasing potency and price of cannabis in Europe, 2006-16.
Tom P FreemanTeodora GroshkovaAndrew CunninghamRoumen SedefovPaul GriffithsMichael T NurmohamedPublished in: Addiction (Abingdon, England) (2019)
European cannabis resin and herbal cannabis increased in potency and price from 2006 to 2016. Cannabis resin (but not herbal cannabis) increased in the quantity of Δ9 -tetrahydrocannabinol per euro spent. Marked increases in resin potency and value from 2011 to 2016 are consistent with the emergence of new resin production techniques in European and neighbouring drug markets.