Stomach pain accompanied by diarrhea and have nausea can eat a lot of drugs, such as can be applied to inhibit gastric acid drugs, such as omeprazole, lansoprazole, pantoprazole, rabeprazole and so on can be, this type of drug has inhibit gastric acid, but also can have the auxiliary effect of protecting the mucosa. In addition, you can also use antidiarrheal drugs, such as montelukast as well as double-acting drugs to regulate gastrointestinal function, that is, nowadays everyone commonly used probiotic preparations, such as bifidobacteria, bacillus subtilis, lactobacillus and so on are available. Some antibacterial drugs can also be used, of course, need to be combined with whether there are signs of infection, such as fever, leukocytes increased, or white blood cells found in the stool, etc., you can use norfloxacin and other drugs to treat the symptoms.