"i was on immediate release version of seroquel 200mg and the side effects were horrible! everlasting hungover and craving for foods like if it&#039;s a drug or i would be going withdraw aka blood sugar crashes. so my dr switched to seroquel 200mg extended release and it was a godsend form of drug! barely any of sedating effects and even lack of any hungover.... and the best part was that i forgot to eat breakfast by accident several times in a week.... if for immediate release i would be going crazy for missing breakfast. imagine that!"