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  • Title: Effect of 3 mg melatonin on jet lag syndrome in an 8-h eastward flight.
    Author: Takahashi T, Sasaki M, Itoh H, Ozone M, Yamadera W, Hayshida K, Ushijima S, Matsunaga N, Obuchi K, Sano H.
    Journal: Psychiatry Clin Neurosci; 2000 Jun; 54(3):377-8. PubMed ID: 11186121.
    Abstract:
    In order to assess the effect of melatonin on jet lag a field study was undertaken. The process of re-entrainment of circadian melatonin rhythm was investigated in six subjects. Except during 24-h blood sampling, the subjects were exposed to natural zeitgeber (time giver) outdoors and given 3 mg melatonin at 23:00 h. The subjects were exposed to bright sunlight from 3000 to 12000 lx. All of them showed orthodromic re-entrainment with taking melatonin, while two out of the six did not show orthodromic re-entrainment without taking melatonin. Melatonin accelerated the rate of the re-entrainment of the circadian melatonin rhythm. Melatonin was useful to jet travel from Tokyo to Los Angeles.
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