Travelling to a destination where the time difference is greater than three hours? There’s a possibility you will get jet lag. This is because your body clock is designed for a regular rhythm of daylight and darkness. If you fly a long way your body clock is disturbed and can take several days for it to re-adjust.
There are treatments that can help you overcome this re-adjustment period quicker.

How does it work?

A tablet that you would take at night is form of a hormone that is naturally produced by the brain in the evening that tells you to go to bed. Hence taking the tablet would mimic your body and help you sleep at night.