Cannabinoids include the following: CBD oil (cannabidiol), which causes sedation and reduced sleep latency but no euphoria CBN (cannabinol), which causes sedation, reduces pain, and increases appetite THC (tetrahydrocannabinol), which causes euphoria, reduces pain and nausea, and has variable effects on sleep stages Dronabinol, which is a synthetic analog Whether cannabis is effective for insomnia is unclear, but it is useful for chronic pain.