International control of hemp and cannabinoids
For a plant that has been used for millennia, controls on the supply of psychoactive and non-psychoactive components extracted from cannabis are relatively recent, with global regulations starting in the 20th century with the International Opium Conventions. The current, and often conflicting, regulatory landscape has focused on definitions of hemp and cannabidiol (CBD). Reference materials are critical to defining the % ?9-THC in these products.