Quetiapine is an atypical antipsychotic medication primarily used to treat mental health conditions such as schizophrenia, Bipolar disorder, and major depressive disorder. It works by affecting various neurotransmitters in the brain, particularly serotonin and dopamine, to help stabilize mood and reduce psychotic symptoms. Quetiapine is available in various formulations, including immediate-release and extended-release tablets. Common side effects may include drowsiness, dizziness, and weight gain.