Symptoms of overdose of sleeping pills, mainly including drowsiness, coma, blood pressure drop, etc., as follows: 1, drowsiness or coma: because sleeping pills contain a large number of sedative, inhibit the excitability of the cerebral cortex, overdose may cause the user drowsiness or even coma; 2, blood pressure drop: overdose of sleeping pills may also cause the user’s blood pressure to drop; 3, inhibition of breathing: sleeping pills have a cerebral cortex Inhibitory effect, may be due to an overdose of sleeping pills, resulting in excessive inhibition of the respiratory center, if respiratory inhibition progresses, may cause the patient ischemia, hypoxia, if hypoxia is too heavy, may cause respiratory failure, or even death. Therefore, overdose of sleeping pills may cause coma, drop in blood pressure, respiratory depression and trigger a series of more serious problems throughout the body.