Cotrimoxazole Sulfamethoxazole is usually taken for about a week, and it is recommended to be determined according to the condition under the guidance of a doctor. The main ingredients of Compound Sulfamethoxazole Tablets are Sulfamethoxazole and Methotrexate, which is a kind of antibacterial drug commonly used in clinic, mainly used for the treatment of enteritis, acute bronchitis, pediatric diarrhea, gonorrhea, sepsis, otitis media and other diseases induced by sensitive bacterial infections. Compound sulfisoxazole is not recommended to be taken for a long time, usually about a week, it is recommended to review the urine routine after taking it, so as not to affect the function of the kidneys. This product can inhibit the growth of Escherichia coli and hinder the synthesis of B vitamins in the intestine, so those who use it for more than a week should be given vitamin B at the same time to prevent its deficiency. When folic acid deficiency is caused by taking compound sulfamethoxazole tablets, folic acid preparations can be taken at the same time. If signs of bone marrow suppression occur, this product should be immediately discontinued and folic acid should be given for symptomatic treatment, and high doses of folic acid can be given to long-term overdosage users and prolonged the course of treatment. For different causes of clinical use of different programs, patients must pay attention to the strict compliance with medical advice during the use of drugs, side effects need to immediately consult a doctor for follow-up, under the guidance of the doctor to adjust the drug program, try to reduce the harm to the body.