Stomach pain after taking medication is considered to be caused by drug stimulation or gastric diseases. Some drugs itself will cause some stimulation of the gastric mucosa, such as cephradine, amoxicillin and other antibiotic drugs, after taking the drug will cause some stimulation of the gastric mucosa, thus causing pain in the stomach, you can change the time of taking the drug in the postprandial period to reduce the damage to the gastric mucosa, and if necessary, replace the drug. There may also be because of their own gastric diseases, such as gastritis, gastric ulcer, gastric mucosa itself there is a certain amount of damage, after taking the drug damage is more serious, the pain symptoms are obvious, the need for appropriate oral acid inhibition drugs and drugs to protect the gastric mucosa, such as omeprazole, rabeprazole, bismuth potassium citrate, aluminum sulfate, and so on. After taking the medicine stomach pain is best to be able to go to the hospital in a timely manner, clear causes, targeted treatment or treatment.