Hello I am concerned about side effects of this quetiapine . I had a panic attack last night while trying to sleep . my heart was thumping and felt like i was struggling to breath . I had to sit up , put the fan on and found it very hard to control . My stomach was in knots and i think the only reason i stayed in bed was i didn't want to scare my kids . I was close to shouting for help but eventually with the fan on i managed to calm down . I felt it just hit me all of a sudden and i wasn't thinking of anything in particular . It felt like i was being smothered . Scared the hell out of me . Earlier in the evening i did consume a lot of caffeine and i ate a load of biscuits just before bed . I am going to phone the p doctors in a minute just to talk about it . Has anyone on here got any advice or had similar ? ps I don't usually suffer panic attacks , if that is what it is .