If it is clear that the diarrhea is caused by drugs, the first step should be to stop the drug, most patients can be relieved after stopping the drug, and at the same time, symptomatic treatment can be carried out, such as a light diet, taking montelukast and so on. Drug-induced diarrhea, should immediately stop using the drug, followed by symptomatic treatment according to the diarrhea. Severe diarrhea patients can take antidiarrheal drugs, such as montelukast, and at the same time should actively replenish water and electrolytes; diarrhea is less frequent, less severe symptoms, there is no need to take antidiarrheal drugs, oral rehydration salts for treatment. The above medications should be used under the guidance of a medical professional. If there is diarrhea caused by taking drugs, you should go to the regular hospital in time, under the guidance of the doctor for treatment, so as not to delay the condition.