Who should not take Norfloxacin Oral?

The following conditions are contraindicated with this drug. Check with your physician if you have any of the following:


  • diarrhea from an infection with Clostridium difficile bacteria
  • glucose-6-phosphate dehydrogenase (G6PD) deficiency
  • low amount of potassium in the blood
  • a type of blood disorder with a decrease in all types of blood cells called pancytopenia
  • anemia
  • decreased blood platelets
  • very low levels of granulocytes, a type of white blood cell
  • low levels of white blood cells
  • psychotic disorder
  • a low seizure threshold
  • pseudotumor cerebri, a condition with high fluid pressure in the brain
  • a painful condition that affects the nerves in the legs and arms called peripheral neuropathy
  • myasthenia gravis, a skeletal muscle disorder
  • a low supply of oxygen rich blood to the heart
  • torsades de pointes, a type of abnormal heart rhythm
  • prolonged QT interval on EKG
  • abnormal EKG with QT changes from birth
  • severe hardening of the arteries in the brain
  • severe renal impairment
  • inflammation of a tendon
  • rupture of a tendon
  • hallucinations
  • seizures
  • muscle tremors
  • abnormal liver function tests
  • high pressure within the skull
  • anemia from pyruvate kinase and G6PD deficiencies
  • lung transplant
  • heart transplant
Drug Survey

Are you currently using Norfloxacin Oral?

This survey is being conducted by the WebMD marketing sciences department.

Selected from data included with permission and copyrighted by First Databank, Inc. This copyrighted material has been downloaded from a licensed data provider and is not for distribution, except as may be authorized by the applicable terms of use.

CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.