What impact does melatonin have on sleep cycle? (Medscape AI)

Melatonin is an endogenous hormone that plays a central role in the timing and quality of sleep by acting on the body’s circadian system and facilitating sleep onset and maintenance. https://www.medscape.com/ai-search?query=What%20impact%20does%20melatonin%20have%20on%20sleep%20cycle%3F&ecd=wnl_tp10_daily_251217_MSCPEDIT_etid7962970&uac=148436CN&impID=7962970