I can`t tell you about Exelon, Brian but my husband was prescribed Aricept and also Reminyl [which is pretty much the same] last year, by the Psychiatrist, so it must have been agrred by the BMA to be available on prescription.
Unfortunately, it didn`t agree with him and it had the most awful side effects. There was I, feeling really lucky this drug was being made available to us, and my poor husband had such dramatic hallucinations, he had to stop taking it immediately.
So I hope you have a better experience, if you are able to get it.
Regards Grannie G