Melatonin is a hormone your body produces in response to darkness, and taking it at the right time can help shift your body clock after long-haul travel. It is most useful when crossing several time zones, particularly travelling east.
Timing is more important than the dose. Our pharmacist will set out when to take it based on your flights and direction of travel. Common side effects include drowsiness, headache and vivid dreams. It is a short-term measure alongside adjusting your sleep, getting daylight at the right times and going easy on caffeine and alcohol.