<unk>  is used as a dietary supplement and medication in the treatment of sleep disorders such as insomnia and circadian rhythm sleep disorders like delayed sleep phase disorder, jet lag disorder, and shift work disorder. Besides<unk> , certain synthetic<unk>  receptor agonists like ramelteon, tasimelteon, and agomelatine are also used in medicine.
Melatonin
Etoperidone
Sertindole
Tropisetron
Zolpidem
Cilansetron
Chloracyzine
Alosetron