I am so sorry that you are uncomfortable about this treatment and I am sure that looking up information about withdrawal is scaring you.Celexa is a good and effective medication, in my experience. Here's the thing....withdrawal from all antidepressants can be difficult so changing it will not make a difference. It is harder on those people who have been treated for years (that is why you do not need to worry about it now). But then, you must be wondering about what if you are on it for along time and then want to get off...what then? Well, you can comfortably come off the antidepressant by weaning slowly under the close supervision of the prescribing doctor. The therapeutic effects of antidepressants take 4-8 weeks. It is not possible to judge the effects without giving it at least this amount of time. If you have some initial side effects (i.e., stomachaches, headaches), they go away just as the depression lifts. In other words, the benefits come on and the side effects go away at about the same time. It is not terrible that you were taking 40 mg for several days, but just take 10 mg tomorrow and 20 mg after that and your serum (blood) level will even out and you'll be on an even dose. Then, commit to 8 weeks before judging it's effectiveness. After that, if you feel you'd like to change, you will can start a new one while you wean from Celexa if it is a different class of antidepressant such as SNRI. You would not be put on another SSRI at the same time to avoid a condition called Serotonin Syndrome. I hope this helps....best of luck to you.