"i have bipolar ii. it took until i was 41 years old before i found quetiapine. i am far more stable on this medicine than anything else i&#039;ve tried. the only side effect is extreme drowsiness which kicks in 45 minutes after taking my medicines, and makes it tough to function the next morning! if that&#039;s the trade off for profound depression or uncontrollable candy coloured highs, i&#039;ll take it."