The common side effects of clonazepam are: 1, common is drowsiness, dizziness, ataxia, behavioral disorders abnormal excitement, hypersensitivity irritability, muscle weakness. 2, some people taking clonazepam after the first use, especially after the sleep time will be very long, once encountered after eating a tablet sleep for 2 days and 2 nights before waking up, so the first use of the dose can not be too large, such as the use of too large resulting in too strong effect may cause effects. 3, may cause respiratory depression, breathing itself is not very good people may appear to slow down, weaken or even stop the dangerous situation, the clinician needs to be used according to the patient’s situation. 4, some people long-term use of clonazepam, its role will be weakened, may need to increase the amount to achieve the effect, after using a longer time even need to switch to other drugs to improve the The role of the disease.