In clinical cold and flu granules should be taken orally half an hour after a meal, cold and flu granules are more commonly used in clinical treatment of colds. Cold and flu granules contain cool ingredients, such as honeysuckle, if taken on an empty stomach, that is, before meals, oral cold and flu granules may have a shock to the gastrointestinal function, damage the gastrointestinal function, leading to stomach acidity, gastric distension, stomach pain, indigestion or gastrointestinal disorders. So it is recommended that patients should take cold and flu pellets after meals, especially for patients with stomach problems, they should take cold and flu pellets by mouth half an hour after meals to treat their colds. So in the clinic should pay attention to the time of taking medicine, according to different patients choose different time of taking medicine. For patients with no stomach problems or strong gastrointestinal function and good physical condition, if you choose to take cold and flu pellets on an empty stomach is fine, but if the symptoms of stomach discomfort occur, it is still appropriate to take cold and flu pellets by mouth after meals.