Did you just start..? Because some of that "tiredness" goes away after awhile. That being said, Seroquel is very sedating. My p-doc has suggested taking it at 7-8 PM instead of bedtime, so that it "wears off" by morning.

For psychotic symptoms, you are actually on a low dose. Usually anything less than 300 mg is for "sleep". 300 mg for depression 400-800 for bipolar and psychotic things.....

Are you planning on going up? Because there are other things that can help with pyschotic sympoms that might not be so sedating....like Abilify, etc.