There is no such thing as “diarrhea norfloxacin a few pills at a time”, different brands of norfloxacin need to take a different number of particles, it is recommended to refer to the dosage of the drug under the guidance of a doctor. Norfloxacin is suitable for urinary tract infections caused by sensitive bacteria, intestinal infections, prostatitis, gonorrhea and typhoid fever and other Salmonella infections. However, this medication is contraindicated in patients who are allergic to this product and fluoroquinolones. Diarrhea symptoms and meet the indications of norfloxacin can only take norfloxacin treatment, used for the treatment of intestinal infections recommended twice a day, a time of 300 to 400 mg, the course of treatment lasts for 3 to 7 days; if it is the treatment of salmonella typhoid infection, recommended 800 to 1200 mg a day, divided into 2 to 3 times, the course of treatment lasts for 14 to 21 days; please follow the doctor’s instructions to use the drug. Adverse reactions such as abdominal pain, abdominal discomfort, nausea, vomiting, rash, fever, elevated serum aminotransferase, and increased blood urea nitrogen may occur after taking the drug. Patients with diarrhea who need to take Norfloxacin for treatment are advised to use the drug under the guidance of a doctor, and should not blindly use the drug on their own.