Sleeping pills are mainly to inhibit the functional activity of the cerebral cortex, to achieve the effect of sedation, sleeping, taking sleeping pills overdose symptoms are as follows: 1, the function of the cerebral cortex is inhibited, the patient will appear to prolong the sleep time, during the daytime is not easy to wake up or the patient wants to wake up but can not wake up, or wake up after the sleepy feeling, walking with a sense of lightness of the head; 2, nausea, vomiting, and diarrhea, headache and other symptoms. The symptoms of nausea, vomiting, diarrhea, dizziness, headache and so on. Sleeping pills must be in accordance with the standardized dosage, because sleeping pills also have a certain degree of dependence, so it should be used under the guidance of a doctor, do not casually increase the dose of medication. Especially the elderly because of the slow metabolism, sleeping pills may also appear after the effect of hangover reaction, the patient may be in the daytime or nighttime when getting up the feeling of light-headedness, which may easily lead to the patient fell.