when I fly to Singapore or anywhere long haul.... I take 2 Aspirins... 1 valium, and 2 Nitol one a nights and chug down a few big glasses of Red wine...
I am normally asleep before Take off and wake up on landing....
Its the way forward.
I slept the whole way to Toyko last year
Sean didn't sleep a WINK! It could be a ginger thing? not sure...