... about 6 months and it never fully "worked" as well as it should-still had breakthrough anxiety, etc. since i have been on the pro, i have felt very jittery and shaky (like i drank a bunch of coffee), i have also had the occasional racing heart. is this a semi-normal side effect? should it diminish over time? i was hoping that since i was jumping from one SSRI to another, i would not have any issues. anyone here moved from Zoloft to Prozac? if so, can you please tell me your experiences? thanks!! oh, i am also on 25 mg of trazodone for sleep, but hopefully weaning off.