Alprazolam is a sedative-hypnotic drug that is widely used in clinical practice to treat insomnia, anxiety disorders and other disorders. Alprazolam can cause poisoning if used improperly. The dose of alprazolam poisoning is more than 10mg in a single dose will reach poisoning, and of course the higher the dose taken, the more serious the degree of poisoning. Patients appear drowsy, indifferent expression, mania, impaired consciousness, tremors of the limbs, muscle twitching and other phenomena after poisoning. Some patients may also experience slower breathing or even respiratory distress, which may eventually endanger their lives due to respiratory failure. Other patients may experience slowed heart rate and decreased blood pressure. When using alprazolam, it is important to know the appropriate dose to avoid poisoning.