Jet lag! Can't sleep! Should I double up on the melatonin?

Increase Melatonin. Jet lag is a mismatch between your internal biologic clock and the external time of your surroundings. Your internal clock is set by both sunlight and melatonin. Get out into sunlight morning and evening, eat at times for new time zone, and take melatoinin before bedtime. Avoid computer & tv screens 4 hours before bed as they interfere with melatoinin production. Prescription sleep aides may help.