If you want to vomit and have an upset stomach, it can be caused by acute gastroenteritis and dyspeptic diseases, and you need to take the appropriate medication according to the specific cause of the disease. If acute gastroenteritis, you can take omeprazole capsules for acidic gastric treatment, and appropriate rehydration, so as not to cause a water-electrolyte imbalance, if the bacterial infection, you can take levofloxacin tablets for antibacterial treatment. If the vomiting symptoms are serious, metoclopramide tablets or granisetron can be given temporarily to stop vomiting. Functional dyspepsia may also cause nausea, vomiting, abdominal distension and other discomforts. At this time, acid-suppressing drugs such as omeprazole can be taken to relieve nausea and acid reflux, and gastrointestinal stimulants such as domperidone and mosapride can be taken to relieve bloating. Avoid eating cold and irritating foods and keep warm. At the same time, nausea and vomiting symptoms need to go to the hospital in time for examination and treatment, the above drugs need to be used under the guidance of a physician, so as not to delay the condition.