Cannabidiol (CBD) is one of more than 104 compounds, or cannabinoids, found in the Cannabis sativa plant. In the UK, the source plant cannot contain more than 0.2% THC and because of this, CBD is non-psychoactive. Tetrahydrocannabinol (THC), like CBD, is a cannabinoid but it is a psychoactive compound. Unlike THC, an addiction to CBD is impossible.