CBD is short for cannabidiol. This chemical compound is extracted from the plant cannabis sativa. There are over 545 chemical entities of which more than 113 of them are cannabinoid compounds. Cannabis has suffered much bad press due to the psychotropic effects of the cannabis extract of tetrahydrocannabinol (THC). However, as science has evolved, we are able to now isolate other constitutes of the cannabis plant, such as cannabidiol (CBD). Cannabinoid pharmacology has made important advances in recent years after the discovery of the cannabinoid receptors (CB1 and CB2).