<prompt> All are true statements regarding Lemborexant except :It is used in the treatment of InsomniaIt is an orexin receptor agonistIt is useful in patients with difficulties with sleep onsetmaintenanceThe most common adverse effect is somnolence  <response>: Lemborexant FDA approved drug for the treatment of insomnia which got its approval after two Phase III clinical trials namely SUNRISE I and SUNRISE II. Useful in insomnia ,characterized by difficulties with sleep onset andor sleep maintenance. Orexin neuropeptide signaling system plays a role in wakefulness. Blocking the binding of wake-promoting neuropeptides orexin A and orexin B to orexin receptors OX1R and OX2R is thought to suppress wake drive. Lemborexant binds to orexin receptors OX1R and OX2R and acts as a competitive antagonist with stronger inhibition effect to OX2R most common adverse effect is somnolence 