Most western medicine can hurt the stomach, for example, after taking western medicine there may be stomach pain, nausea, vomiting, as well as abdominal pain, diarrhea, indigestion and other adverse reactions in the gastrointestinal tract. In order to reduce or alleviate these adverse reactions, when using western medicine that stimulates the stomach, it is recommended to use it 15-30 minutes after meals. If the use of western medicine stimulates the stomach and the body can tolerate it, you can continue to take the medicine. If the adverse reactions are not tolerated, or if some serious gastrointestinal adverse reactions occur, such as gastric ulcer, duodenal ulcer, gastric bleeding and gastrointestinal bleeding, the use of the drug must be stopped.