Everything, dizzyiness, irritation, alot of anxiety, depression, nausea, jitteriness, shakes, almost like getting electic shocks...

The worse for me after being on it for 10 weeks and feeling like crap mainly anxiety increased, irritability etc my psychitrist advised me to switch as I couldn't tolerate it on the smallest dose.

Again everyone is different, Celexa was the only drug that I had alot of problems with so far when I started it.