"first let me say i am super sensitive to all medications, i tried zoloft, efflexor, prozac, paxil, wellbutrin, and some others and could not tolerate them. i started on celexa which i only had short nausea episodes. my anxiety and depression was better but i still felt a little foggy. (started at 1/4 of 20mg upto 1/2 of 20mg) . my doctor switched me right over to lexapro (1/4 pill of 10mg),  same except there is one less molecule taken out  i did this for about 2 weeks,then i went up to 1/2 of 10mg(5mg) other than nausea for a short time the first day i felt okay. as the days went on it has been better and better. i also take xanax .25mg but find that i rarely need it anymore. start with baby doses, it was super easy for me! best of luck"