What are the symptoms of overdose depends on the type of medication taken, and the possible symptoms may vary. Patients who take too many sleeping pills will have symptoms such as continuous coma, nausea and vomiting, mainly because the drugs cause paralysis of the nervous system, so that the drugs in the patient’s body can not be completely metabolized, resulting in continuous drowsiness; second, patients who take too many painkillers will cause stimulation of the mucous membrane of the gastrointestinal tract, such as abdominal distension, abdominal pain, nausea and other gastrointestinal symptoms, so when taking painkillers, in addition to controlling the dose, can be appropriate Therefore, in addition to controlling the dose of painkillers, we can add drugs to protect the gastric mucosa so as not to cause damage to the stomach; third, patients who take too many antihypertensive drugs at one time will cause a continuous decrease in blood pressure, resulting in the performance of hypotensive shock in patients, who may have accelerated heart rate, decreased blood pressure, nausea, vomiting and even coma.