I agree wholeheartedly with the points raised by your C/L psych contact. Personally, I hesitate to use quetiapine just for insomnia (I think there are cleaner ways to get histamine blockade if that's the mechanism you're shooting for), but it is far from unusual especially if it can pull double-duty (e.g., as a mood stabilizer, antipsychotic, or antidepressant augment). Insofar as it's dosed for insomnia (usually 25-50 mg), its D2 affinity is negligible. It doesn't become a respectable antipsyc…