Cannabinoids are a group of chemical substances that join with special receptors of the body and brain, now known as the Endogenous Cannabinoid System. They can be naturally occurring inside our body, known as endogenous cannabinoids. Other cannabinoids are from plants, known as Phyto cannabinoids: this is the category for cannabis cannabinoids—finally, synthetic cannabinoids, such as the pharmaceutical drug Marinol. Cannabinoids have many applications ranging from altering your state of consciousness to a wide array of potential herbal health applications. Each cannabinoid of the cannabis plant has a unique chemical structure and function.