Anyone switch from Zoloft, effexor and cymbalta to prozac 20mg with good results for panic and anxi? Was on cymbalta over ten years. Wellbutrin added along the way for the jumpiness cymbalta caused. Finally causing blurred vision etc. So I tried effexor again and big disaster six mos. Ago. Tried Zoloft and never slept. So I'm on Prozac 20 mg.first day.was on this way back in day it first came out. I have anxiety, panic. Bad. Take .50mg ativan twice day.