Zopiclone is a new type of sleeping drug, pharmacologically it belongs to the class of cyclopirox, which differs from benzodiazepines in that it acts more rapidly and more strongly than benzodiazepines. It is generally more effective, with significant hypnotic and sedative effects, as well as anxiolytic, anticonvulsant and muscle relaxing effects. Used as a sleeping pill, it can rapidly introduce sleep, prolong the patient’s sleep phase, and deepen the degree of sleep and improve the quality of sleep. It is suitable for insomnia caused by various reasons, especially for patients who cannot tolerate the hangover effect. Some patients are prone to dizziness and weakness the next day after taking benzodiazepine sleeping pills, known as the hangover effect. Zopiclone generally does not have these effects and has relatively few side effects, but it can also cause reactions such as bitter mouth, dry mouth, muscle weakness or headache.