Melatonin is your body’s natural sleep hormone, and it also can be taken in pill form to advance natural sleep patterns. Health magazine says it can be your friend when traveling—you can take it after dark on the day you travel to induce sleepiness, and for a few days after. The same can be done in advance if you’re heading east – start taking melatonin in the evening a few days before you depart.
However, the magazine says there are warnings attached to taking melatonin supplements—it can negatively interact with prescription drugs. So while melatonin can be purchased off the shelf, you should speak to your doctor or pharmacist about any possible side effects.