CBD oil is a concentrated liquid extract of the cannabinoid cannabidiol (CBD) that is derived from cannabis plants. CBD is one of over 100 cannabinoids found in cannabis, but unlike THC (tetrahydrocannabinol), another well-known cannabinoid, it does not produce psychoactive effects or the feeling of being “high.” CBD oil is typically made by extracting CBD from the hemp plant, which is a strain of cannabis that is high in CBD and low in THC.