Barbara,

some of these threads get to long to not cut out the proceeding
threads. I used beta blockers for a time with no effect. Around RAS,
you will find lot's of opinions, sometimes based on fact.

You might hunt around on FAA.gov or the EU equivalent for medications.
In the US, a medical is required for power ratings and I do know some
medications are disqualifying. I would expect that with the
international harmonization programs, most medical issues will be
handled similarly.

With gliders,no medical exam is required- it is supposedly an honor
system; if you have a health issue, you should not fly.