I think the neurologist has to determine that! In about 3-12% of studies about Prozac, there were reported tremors as adverse reaction, depending a little bit on cause of Rx. On the other hand, 1-5% of persons included in that study who took placebos reported exactly the same. It could be other reasons too. I was ready to blame trembling on the use of citalopram, but when I cut down on coffee, I learned something else...
Someone else than me might have a better answer?
I'd consider pro's and con's for discontinuing a medication - that's never advised without having checked it off with the prescriber's input.
Me? I went against medical advice last time and quit my medications but I have a SAD to battle and as long as sunlight provides I'm pretty stable (I think?)... *giggles*