"i began taking citalopram while having severe headaches: the haze caused by the aches gave me severe anxiety- so i began taking this while finding a solution. i&#039;d always had a bit of anxiety, and bouts of moderate depression, and i noticed after about three weeks of taking citalopram that i consistently felt glad to be alive- for the first time ever. living, the tasks associated with it- often feel like a chore, leading to a general cynicism for me. i began at 10 mg: and the new found joy of life was accompanied by a constant need to sleep. 12 hours a day- and lethargy in between. the drowsiness was so bad i couldn&#039;t study, so i had to switch to 5 mg. i&#039;m less tired, less happy and more anxious. compromise. i also take 25 mg nortriptyline."