Norfloxacin capsules instructions will have side effects, the size of the side effects vary from person to person, each patient’s physical condition is different, the side effects of the medication are not the same, there are gastrointestinal reactions, allergic reactions and other side effects. Norfloxacin capsules belong to the fluoroquinolone class of antibacterial drugs, used for the treatment of urinary tract infections caused by sensitive bacteria, gonorrhea, prostatitis, intestinal infections and other diseases, any drug will have side effects, each patient’s physical condition is different, after using the drug the side effects will be different. Norfloxacin capsules more often appear gastrointestinal reactions, such as abdominal pain, diarrhea, nausea, vomiting and other symptoms, central nervous system reactions appear dizziness, headache, drowsiness, insomnia and other symptoms. Allergic reactions, such as rash and itching of the skin, have been observed in some patients. Occasionally, there are symptoms such as seizures, mental abnormality, agitation, impaired consciousness, tremor, fever, phlebitis. Some patients may experience more serious adverse reactions after taking Norfloxacin Capsules, such as disability, tendonitis, tendon rupture, peripheral neuropathy, Clostridium difficile-associated diarrhea, photosensitivity or phototoxicity, and other side effects. It is contraindicated in patients who are allergic to norfloxacin capsules and quinolones, and should be used with caution in patients with a history of gastric ulcers, rheumatoid arthritis, myasthenia gravis, severe cerebral atherosclerosis, epilepsy, and other central nervous system disorders. Norfloxacin capsules, it is recommended that the patient’s disease according to the symptomatic use of medication, do not go blindly use their own medication.