Olanzapine can be taken in two capsules as prescribed by the doctor, but if the doctor’s prescription is to take one capsule of Olanzapine, then taking two capsules of Olanzapine may cause overdose hazards such as tachycardia, increased aggression, etc., which must be disposed of by gastric lavage, taking activated charcoal, and so on. Olanzapine is used to treat schizophrenia, manic episodes of bipolar disorder, and depressive episodes of bipolar disorder. If the medical advice is to take one capsule of olanzapine, it is recommended to follow the medical advice. A prolonged overdose of two capsules of olanzapine may result in harms such as arrhythmia, tachycardia, palpitations, increased aggression, dysphonia, convulsions, coma, respiratory depression or tachypnea, unstable blood pressure, and cardiopulmonary arrest. The occurrence of these overdose hazards requires immediate resuscitation. Olanzapine is not recommended to induce vomiting; gastric lavage, administration of activated charcoal and other measures can be used; attention also needs to be paid to the monitoring of hypotension, circulatory failure and maintenance of respiratory function. In addition, the use of beta agonists such as epinephrine and dopamine is prohibited when taking the drug, so as not to aggravate the symptoms of hypotension. In the event of poisoning, it is recommended to go to the hospital. The drug is prohibited for unauthorized use, and should be used rationally under the guidance of a doctor.