Cannabis has a long history of anecdotal medicinal use and limited licensed medicinal use.
Until recently, alleged clinical effects from anecdotal reports and the use of licensed
cannabinoid medicines are most likely mediated by tetrahydrocannabinol by virtue of: 1) this
cannabinoid being present in the most significant quantities in these preparations; and b)
the proportion: potency relationship between tetrahydrocannabinol and other plant
cannabinoids derived from cannabis. However, there has recently been considerable …