What are the better known side effects of seroquel (quetiapine)?

Nausea and others: Dizziness, nausea, drowsiness, tiredness, constipation. Weight gain, increased blood sugar levels leading to diabetes, involuntary movements of lips, tongue, mouth, limbs (tardive dyskinesia) , increased amount of prolactin hormone which can cause men to develop breasts and women to produce breast milk. Sudden death in elderly has also been reported.