Melatonin for Jet Lag: Timing, Dosage, and Effectiveness

Overview

Melatonin supplementation is one of the most well-studied and effective aids for jet lag recovery, particularly for eastward travel. Melatonin works for jet lag through two mechanisms: its direct sleep-promoting effect helps you fall asleep at the new local bedtime, and its chronobiotic effect, taken at the right time, actually shifts your circadian clock. The timing of melatonin is more important than the dose. For advancing your clock after eastward travel take melatonin in the early evening at your destination, ideally 30-60 minutes before your target bedtime. For delaying your clock after westward travel, melatonin is generally less effective and may not be necessary. Doses of 0.5 to 3mg are typically sufficient with lower doses often as effective as higher ones for the circadian shifting effect.

Choosing and Using Melatonin Products

Melatonin quality varies significantly between brands since it is classified as a supplement rather than a medication. Look for USP-verified or third-party tested products. Immediate-release formulations are generally preferred over extended-release for jet lag since the goal is a concentrated signal at the right time rather than sustained release. Take melatonin in a dimly lit environment to allow it to work in concert with your natural melatonin rather than competing with light-induced suppression.

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