Haloperidol, or Norfloxacin, is usually taken by adults for one course of treatment, after the condition is relieved or eliminated, it can no longer be taken, if the condition is serious, it is appropriate to increase the course of treatment. It is recommended to follow the doctor’s advice. Norfloxacin belongs to a kind of antibiotics, applicable to the sensitive bacteria caused by urinary tract infections, gonorrhea, prostatitis, intestinal infections and typhoid fever and other salmonella infections. Adverse reactions to the gastrointestinal tract reaction is more common, can also be seen in the central nervous system reaction, allergic reaction, a few patients have photosensitive reaction. It is contraindicated in patients who are allergic to norfloxacin and fluoroquinolones. It should be noted that norfloxacin should be taken on an empty stomach; urine specimens should be taken for culture before administration, and the drug should be adjusted with reference to the results of bacterial sensitization; in order to avoid the occurrence of crystalluria, it is advisable to drink more water and keep the volume of 24-hour urine output above 1,200 ml; people with reduced renal function need to adjust the dosage of the drug in a timely manner according to the renal function; and the drug needs to be discontinued in the event of photosensitivity reactions, and so on. It is recommended to take under the guidance of a professional doctor, do not blindly take the drug, the specific course of treatment also need to follow the doctor’s instructions.