Told in drug and alcohol class last month that Melatonin isn't approved.
Which is laughably as everyone seems to be on it.
Full scale drug testing for sleep pills would shut down the airline. If they actually tested for hard stuff, who knows..
Booze/ Liver GGT that most other airlines do test for would shut us down full stop.
I suspect the Swire Prince's are smart enough to know they would lose their bonus' is they started testing.