Sudafed is clearly controversial.
I took it under the direction of my GP but when I mentioned it to my AME he got shirty and said it could have made me dizzy.
It didn't. Apart from clearing my tubes it had no further noticeable effect.
If you read the notes included with any medication, the possible side effects often look worse than the disease.
I will of course heed the directions of the CAA.
If in doubt these days I will normally call my AME and ask his advice.