orexin

Sleep Talk: Episode 16 – Orexin & Suvorexant
Orexin is a 'master controller' of the sleep wake control system. It stimulates the wake-promoting system and stabilises the switching between wake and sleep.
What is orexin?
Orexin is one of the key neurotransmitters in the regulation of sleep and wake. Blocking orexin with suvorexant is a treatment for insomnia.