The medication you specify is a member of the AMPHETAMINE group and is a total bar to any kind of flying certification (at least in the UK and Europe).
Personally, I'm not sure I would like the pilot(s) of any plane in which I was travelling to have a Deficient Attention span, no matter how mild.
I think you will find that the medical authorities will react similarly.
Sorry if that's not what you were hoping to hear.