Exogenous cannabinoids include CBD, THC, cannabichromene (CBC), and cannabigerol (CBG). Cannabinoids, both endogenous and exogenous, bind to endocannabinoid receptors attached to cells.

Aside from the two most popular cannabinoids, tetrahydrocannabinol (THC) and cannabidiol (CBD), two less commonly known non-psychoactive compounds are cannabigerol (CBG) and cannabinol (CBN).