"i started taking mirtazapine on the advice of my psychiatrist 5 months ago, in october of 2014! the doctor suggested this because of my panic disorder my general anxiety and my insomnia! i was on paxil and celexa years ago, but i find mirtazapine better in the sense that it has less side effects and feels almost like i&#039;m taking nothing at all! there is no apathy no drugged feeling like ssri can cause! i must mention that it took me about 4 weeks to feel clear headed taking mirtazapine! first 4-6 weeks i did feel zombied, but better then the zombie feeling one gets from poor sleep! there are also zero sexual side effects! only problem i experienced is i gained 7 lbs in the 5 months but the weight gain stopped, i work out and it stopped the weight gain"