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What are the symptoms of jet lag? Jet lag causes a combination of symptoms, including daytime sleepiness, disorientation, poor concentration, fatigue, gastrointestinal discomfort, headaches, difficulty falling asleep, and frequent waking from sleep. The symptoms can last from a day to a week or longer, depending on the person and the number of time zones crossed.  How is it treated? Doctors usually recommend one to two days of rest or light activity upon arrival to allow for adjustment to the new time zone. Eating and sleeping patterns should be gradually shifted to fit the local time schedule during this period. In addition, treatment regimens or medication schedules being used for treating health conditions may need to be adjusted based on elapsed time rather than a specific time of day dosing. Nutritional supplements that may be helpful: Melatonin is a natural hormone that regulates the human biological clock and may be helpful in relieving symptoms of jet lag, according to some,1 2 though not all,3 4 double-blind studies. One double-blind trial, involving international flight crew members, found that melatonin supplementation was helpful when started after arriving at the destination but not when started three days before leaving.5 Another double-blind study compared various amounts and forms of melatonin taken at bedtime for four days after the flight by people who traveled through six to eight time zones.6 Fast-release melatonin supplements were found to be more effective than the controlled-release supplements. A 5 mg and 0.5 mg fast-release melatonin were almost equally effective for improving sleep quality, time it took to fall asleep, and daytime sleepiness. References: 
1. Petrie K, Conaglen JV, Thompson L, Chamberlain K. Effect of melatonin on jet lag after long haul flights. BMJ 1989;298:705–7. 2. Claustrat B, Brun J, David M, et al. Melatonin and jet lag: confirmatory result using a simplified protocol. Biol Psychiatry 1992;32:705–11. 3. Edwards BJ, Atkinson G, Waterhouse J, et al. Use of melatonin in recovery from jet-lag following an eastward flight across 10 time-zones. Ergonomics 2000;43:1501–13. 4. Spitzer RL, Terman M, Williams JB, et al. Jet lag: clinical features, validation of a new syndrome-specific scale, and lack of response to melatonin in a randomized, double-blind trial. Am J Psychiatry 1999;156:1392–6. 5. Petrie K, Dawson AG, Thompson L, et al. A double-blind trial of melatonin as a treatment for jet lag in international cabin crew. Bio Psych 1993;33(7):526–30. 6. Suhner A, Schlagenhauf P, Johnson R, et al. Comparative study to determine the optimal melatonin dosage form for the alleviation of jet lag. Chronobiol Int 1998;15:655–66. |
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