Insomnia is a sleep disorder characterized by inability to sleep or sleeping less time than desired. The endocannabinoid system plays a role in sleep processes and medical cannabis users already reported benefits of cannabis use to sleep. More research on the molecular mechanism of cannabinoids in sleep processes could uncover their potential on treating sleep disorders.

δ-opioid receptor

δ-opioid receptors are primarily sensitive to opioids and enkephalins. δ-opioid receptors are not classic cannabinoid receptors but their activity is modulated by cannabinoids. Since cannabinoids have a physiological effect on δ-opioid receptors they are effectively cannabinoid receptors.


Cav3.3 is a calcium channel of the T-type that is involved in many brain processes. Contrary to other calcium channels Cav3.3 is activated by relatively low/negative voltages.