Chronic prostatitis take levofloxacin for 4~6 weeks. Chronic prostatitis may be related to pathogen infection, if the pathogen infection caused by chronic prostatitis, need to use antibacterial drug treatment to kill or inhibit the reproduction of bacteria, control infection and inflammation, if you use levofloxacin, you should be tried for two weeks, if the symptoms are relieved, continue to use for 2~4 weeks, if the use of the later has no effect, you should stop the drug immediately. Levofloxacin may have adverse reactions, such as abdominal discomfort or diarrhea, nausea, vomiting, etc., but also dizziness, headache, drowsiness or insomnia, and occasionally allergic reactions, it should be noted that the quinolone class of drugs allergy is prohibited, contraindicated in pregnancy and breastfeeding, and contraindicated in patients under 18 years of age. Patients with chronic prostatitis should choose the appropriate medication under the guidance of a doctor, and should not use medication on their own to avoid adverse consequences.