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Melatonin - Wikipedia, the free encyclopedia
Melatonin also comes in pills, you can buy it on the internet or in local store (if any).
It has been studied for the treatment of cancer, immune disorders, cardiovascular diseases, depression, seasonal affective disorder (SAD), circadian rhythm sleep disorders and sexual dysfunction.
Treatment of circadian rhythm disorders
Exogenous melatonin, usually taken orally in the afternoon and/or evening, is, together with light therapy upon awakening, the standard treatment for delayed sleep phase syndrome and non-24-hour sleep-wake syndrome. See Phase response curve, PRC. It appears to have some use against other circadian rhythm sleep disorders, such as jet lag and the problems of people who work rotating or night shifts.