Cannabidiol (CBD) is one of many cannabinoid molecules produced by Cannabis, second only to THC in abundance. These plant-derived cannabinoids, or phytocannabinoids (phyto = plant in Greek), are characterized by their ability to act on the cannabinoid receptors that are part of our endocannabinoid system. While THC is the principal psychoactive component of Cannabis and has certain medical uses, CBD stands out because it is both non-psychoactive and displays a broad range of potential medical applications. These properties make it especially attractive as a therapeutic agent.