Trix,
I have been taking a low dose of Lexapro since right before I was dx'd with PD 9 years ago. It comes as a generic now (escitalopram oxalate) so it is really cheap in the US. There is no fogginess or intereference with any of my PD regimen which is mainly c/l and mucuna. Never had a problem with it except some generic forms are not as good as others, but that will come from your personal trial and error....Best of luck, hang in....

Eric