I would think if you have it in the prescription bottle as you got it at the pharmacy there shouldn't be any question.
My husband has been traveling on business for years, never once was his meds questioned or confiscated, in Europe.
The best thing is to ask the prescribing physician about this,see what he says then follow through with his advice.
Maybe even a letter of clearance written by him may help?
Lots of luck with this and your travels.
DE