"i was on quetiapine for a few months. it worked wonders and levelled my mood wonderfully and i was thankful to have something work so effectively. however i suffered from two major side effects; tiredness and weight gain. my doctor and i tried to combat the weight gain and tiredness but in the end i had to change to another medication as we couldn&#039;t control it and i was only on 25mg at night. i don&#039;t want to put people off as this drug helped me with my mood disorder and i&#039;m sensitive to some side effects."