If the diarrhea is caused by bacterial infection, taking oxytetracycline has a certain therapeutic effect. Doxycycline hyclate is a broad-spectrum antibiotic drug has antibacterial and anti-inflammatory effect, if it is because of bacterial infection caused by intestinal inflammation, which leads to diarrhea, such as acute enteritis, colitis, dysentery, etc., take doxycycline, have a therapeutic effect, but is generally not recommended to take, mainly because of the side effects of the drug is relatively large, the liver and kidney function will cause some impact, especially children can not take. In addition, there are many causes of diarrhea, such as indigestion, viral infections and other causes of diarrhea, oxytetracycline can not play a therapeutic role. When you have diarrhea, you must consult a doctor in time to identify the cause of the disease, treat the cause, and use medication under the guidance of the doctor to avoid self-medication, which will cause the disease to be delayed.