I've been taking 25mgs of Quetiapine for sleep mostly. I'm diagnosed bipolar 1. However I don't agree with the diagnosis. I'm also currently on bupropion xl, mirtazapine and lamotrigine. I'm just wondering if I have to taper off of 25mgs of the Quetiapine? Also would like to know I'd anyone uses this low a dose as a mood stabilizer? I've been on these 2 atypical antidepressants for over a year and thinking I am not bipolar as antidepressants are "supposed to" cause mania. Which I haven't switched into.