Seroquel Side Effects: no weight gain from the seroquel. Just from being fat and lazy. H http://www.medications.com/effect/view/31528 no weight gain from the seroquel. Just from being fat and lazy. Ha ha ha! But I did have headaches, agitation, and I felt sleepy 24/7. And that's from 4 years of taking it! i have been on seroquil for about four years now. i take four hun Sat, 12 Jul 2008 02:24:52 -0400 http://www.medications.com/effect/view/31528?item=10006 i have been on seroquil for about four years now. i take four hundred milligram every night before i go to sleep. I have tried to quit taking it bfore but gor really sick couldn sleep at all and mind racing. have you ever tried to quit taking it and got re http://www.medications.com/effect/view/31528?item=10006