Taking Quetiapine Fumarate may take 2 to 5 weeks to have a noticeable effect. It is recommended to use the drug properly under the guidance of a doctor. Quetiapine fumarate can be used to treat acute manic episodes of schizophrenia and bipolar disorder, and can also be used to reduce depression, anxiety and other disorders associated with schizophrenia. The duration of taking the drug varies depending on the patient’s condition, and it usually takes 2 to 5 weeks of medication to show significant results. Adverse reactions include drowsiness, dizziness, headache, dry mouth, and withdrawal reactions. It is contraindicated for those who are allergic to this product and the ingredients contained in it. Combination with cytochrome P450 3A4 inhibitors, such as HIV protease inhibitors, azole antifungal agents, erythromycin, clarithromycin and other drugs is prohibited. Pregnant and lactating women, children under 18 years of age should not be used. When there is no obvious therapeutic effect of prolonged use of the drug, patients should go to the hospital in time to consult the doctor and adjust the dosage of the drug or change other drugs as prescribed by the doctor. Patients should take Quetiapine Fumarate drug correctly under the guidance of the doctor for treatment to prevent adverse reactions.