I haven't flown that often, but when I do, I dope myself up with Gravol just in case

When I flew out of Frankfurt last year, I took 3 Gravol before getting on the plane and the next thing I remember is waking up during one of the inflight movies. My friend Lisa said I did my seatbelt up and then was out like a light.
BTW, its great that those two girls stayed with you to make sure you were ok. That is very kind
Stephanie