Cannabidiol, or CBD as it is commonly known, is a very interesting chemical. And it is responsible for many people changing their views on marijuana use for medicinal purposes. While everyone has heard of THC, not many are aware of CBD. The two chemicals are both contained in marijuana, but they serve very different purposes. While the THC in marijuana is going to get you high, CBD is something that poses huge benefits from a medicinal point of view - and it does not have the same side effects on the body as THC.