Clonazepam is a sedative and sleeping drug that can also be used to treat seizures. The most common side effects of clonazepam are drowsiness, ataxia, and behavioral disturbances in patients. Rashes, diplopia, and gastrointestinal reactions have been reported to occur in some patients after taking clonazepam. Clonazepam is addictive, and patients can become addicted and resistant to it after 1-6 months of taking it. Some patients will experience psychiatric symptoms after taking clonazepam, manifested as anxiety, depression, etc. Some patients may experience dizziness, weakness, vertigo and other symptoms. Clonazepam can also have an inhibitory effect on the respiratory system and the heart. Elderly people should pay close attention to respiratory depression when taking clonazepam to avoid the possibility of pneumonia or reduced blood oxygen.