CBD is a naturally occurring compound of the hemp plant. People mix it with a carrier oil to create CBD oil. CBD is also the second-most-active ingredient of cannabis (marijuana). Unlike the most well-known cannabinoid — THC — CBD isn’t psychoactive. This means taking it won’t make you high. As a therapeutically potent and non-intoxicating alternative to THC, those who are cautious to try out cannabis for the first time consider CBD an appealing treatment option.