Quetiapine side effects include sleepiness, dizziness, dry mouth, weight gain, and movement changes, such as tremors, muscle spasms, or restlessness.
Other common side effects of quetiapine (Seroquel) can include a fast heartbeat or palpitations, blurred vision, constipation, abdominal discomfort, increased appetite, abnormal dreams, nightmares, and abnormal results on certain blood tests.
Quetiapine should only be used under medical guidance. If side effects occur, you should contact the doctor who prescribed it, as the dose or treatment plan may need to be adjusted.