Patients who have accidentally taken drugs that have been expired for 3 years can take different treatment methods according to the specific situation of the patients. First, the patient went to the hospital for blood test of liver and kidney function and electrocardiogram, if no damage of liver and kidney function was found, and the electrocardiogram was normal. At this time, the patient will generally not experience nausea and vomiting due to the small dose of expired drugs. In this case, it is recommended that the patient drink more water to promote faster metabolism of drugs in the body, and close observation can be taken. Second, if the patient consumes a larger dose of expired drugs, accompanied by nausea, vomiting, abdominal distension and other discomfort. Need to go to the hospital as soon as possible to perform gastrointestinal decompression, gastric lavage treatment. Complete blood routine and blood biochemical examination. If the patient is treated in time, generally after 3-5 days, the metabolism of expired drugs in the body is completed and no further damage will be caused to the human body.