[The use of melatonin in the treatment of chronic fatigue syndrome and circadian rhythm disorders in Parkinson's disease].
Datieva, V K, Rosinskaia, A V, Levin, O S·Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova·2013
This study tested whether melatonin, a natural hormone that helps regulate sleep, could help Parkinson's disease patients who also experience chronic fatigue. Thirty patients took melatonin and showed a 21% improvement in fatigue, better sleep, less anxiety, and improved quality of life. The treatment did not significantly affect movement problems, thinking abilities, or depression.