Embodiments relate to a method for treatment of a sleep disorder and to compositions comprising tetrahydrocannabinol (THC), cannabidiol (CBD), and cannabinol (CBN), wherein the ratio of THC:CBD:CBN by weight is A:B:C where A is between 0.0001 and 1, B is 1, and C is between 0.05 and 1. Optionally A is between 0.001 and 0.02, B is 1 and C is between 0.2 and 0.7.