I started celexa at 5 mg on October 2 and now have gone up to 10 mg on November 4. I've had the normal side effects like nausea and increased anxiety/OCD. I think this is the right medicine for me. I just want to know when would be the best time to increase to 20 mg, that is if my psychiatrist lets me, which she most likely will. I personally want to be on a higher dosage as soon as possible. I see her again on the first of December. I plan on going to 40 mg after I am on 20 for some time. I just wonder how big a leap is 20 to 40 mg. I've been diagnosed with severe general anxiety as well as social anxiety. I also have OCD. I take a .5 mg Xanax with 1 mg rispersal when I wake up and at night when I go to sleep. Also I take my celexa in the morning too. I also take 5 mg saphris with the Xanax and rispersal before I go to bed. If anyone has insight or answers that would be great.