"i have been on celexa for about a week and a half, ever since i had noticed a loss of appetite, and zombie like. but, as how i used to feel without the medication at first, i feel more calm and less anxious. as for the constant panic attacks that i was having, celexa helped ease it a lot. yes, i feel tired all the time and unable to sleep well. luckily i am taking ristoril along with it. i am able to sleep my good eight hours, before waking up to go to college every morning. i am considering to talk with my doctor, to see if he can at least lower the dosis a bit to 10mg. i am currently taking 20mg. that way, the side effects won&#039;t take it&#039;s toll on me."