Diarrhea can usually occur about 1-2 hours after taking Fei’er Pill, but there are some differences due to the dose of medication and individual constitution. It is often used for the treatment of indigestion, abdominal pain from worms, yellow face and abdominal distension in children. An overdose of Fei’er Pills can cause diarrhea, which generally does not require much treatment. It is recommended to drink more water and give montelukast to stop diarrhea if necessary. The pills can be used under the guidance of a doctor to ensure the safety of the medication. If serious gastrointestinal symptoms such as diarrhea occur after taking the medicine, it should be discontinued immediately, and serious cases need to promptly consult a gastroenterologist to identify the cause and adjust the medication. When taking Feier Pills, pay attention to avoid spicy, cold, greasy or indigestible food, to light, warm, easily digested food.