Cannabinoids are a class of diverse chemical compounds that act on cannabinoid receptors on cells that repress neurotransmitter release in the brain. These receptor proteins include the endocannabinoids (produced naturally in the body by humans and animals), the phytocannabinoids (found in cannabis and some other plants), and synthetic cannabinoids (manufactured chemically). The most notable cannabinoid is THC, the primary psychoactive compound of cannabis. CBD is another major constituent of the plant, representing up to 40% in extracts of the plant resin. There are at least 85 different cannabinoids isolated from cannabis, exhibiting varied effects.
- Cannabinoid at Wikipedia
- Bulletin on Narcotics - 1962 Issue 3 - 004 (January 1, 1962), United Nations Office of Drugs and Crime