Patient Medicine Information
Why do I need this medicine?
Norfloxacin is an antibiotic. It is used to treat certain bacterial infections of the genitals, prostate, bladder, stomach and bowels.

This medicine may be used to treat other bacterial infections as decided by your doctor.
How do I take this medicine?
Take Norfloxacin exactly as directed by your doctor or according to the instructions on the label. Do not take more or less than instructed by your doctor.

This medicine should be taken on an empty stomach at least 1 hour before or 2 hours after a meal. Always take it with a full glass of water, unless your doctor has specifically told you not to do so.

Norfloxacin must be taken at regular intervals for it to be effective. Continue taking this medicine even when you feel better. Do not stop taking it unless instructed by the doctor.

Do not skip any doses. You must complete the entire course of antibiotic. If you don't, the infection will not clear completely.
What should I do if I have forgotten to take this medicine?
Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and return to your normal dosing schedule.

DO NOT double a dose under any circumstances.

If you often forget to take your medicine, let your doctor and pharmacist know.
When should I not use this medicine?
Do not take Norfloxacin if you have ever had an allergic reaction (rashes, breathlessness, swollen eyes) to similar antibiotics such as ciprofloxacin, levofloxacin, lomefloxacin, moxifloxacin, nalidixic acid, and ofloxacin.

Alert your doctor if you have history of tendonitis (an inflammation of tendon) or related conditions as Norfloxacin may not be suitable for you.
What should I take note of while taking this medicine?
Inform your doctor if you have the following conditions:
  • heart disease
  • kidney disease
  • epilepsy (fits or seizures)
  • myasthenia gravis (a muscle weakness disorder)
  • rheumatoid arthritis (an inflammation in joints of fingers, wrist, feet, ankles)
  • syphilis (a sexually transmitted disease)
  • G6PD deficiency (an inherited blood disorder that affects the red blood cell)
  • tendon or muscle injury
Let your doctor know if you are pregnant or breastfeeding.

Be sure to check with your doctor or pharmacist before giving this medicine to a child.

Keep your appointments with your doctor. Your doctor needs to monitor your condition and check your response to the medication regularly. He may also need to do routine blood tests while you are being treated with Norfloxacin.
What side effects could I experience?
Norfloxacin may cause dizziness. If affected, do not drive or take part in any activity in which you need to be alert.

Other side effects include any of the following: diarrhoea, nausea, stomach discomfort, and headache. If you have diarrhoea, drink lots of water to replace the fluids lost.

Norfloxacin may also cause your skin to be more sensitive to sunlight. Avoid direct or prolonged exposure to the sun or ultraviolet (UV) light, including tanning beds and sun lamps.

Some side effects may need immediate medical help. Alert your doctor quickly if you experience any of the following:
  • rashes, breathlessness, swollen mouth or eyes
  • fever with persistent sore throat or mouth ulcers, unusual bleeding or bruising
  • ruptured tendon usually characterized by a snap or pop you hear or feel, severe pain, bruising, and marked weakness on the affected area e.g. kneecap, shoulders, heel
  • numbness or tingling sensation in the hands and feet
  • irregular heartbeat
  • unusual changes in mood or behaviour (being too depressed, having thoughts of self-harm, seeing, hearing or feeling things that are not existent)
  • seizures
Inform your doctor if any of these side effects do not go away or are severe, or if you experience other side effects.
Can I take this with other medicines?
Inform your doctor and pharmacist if you are taking any of these medicines:
  • other antibiotics e.g. chloramphenicol, tetracycline, nitrofurantoin
  • warfarin (a blood-thinning medicine)
  • medicines for diabetes e.g. glibenclamide, insulin
  • theophylline (medicine for asthma)
  • medicines for heart disease e.g. amiodarone, sotalol, procainamide
  • medicines for pain and/or inflammation e.g. ibuprofen, celecoxib, prednisone
  • medicines for epilepsy (fits or seizures) e.g. phenytoin, phenobarbital
  • medicines for stomach problems e.g. sucralfate
  • probenecid (a medicine for gout)
This list does not include all medicines that may interact with Norfloxacin.

This medicine should not be taken at the same time as antacids or supplements that contain aluminium, calcium, iron, magnesium, or zinc. These may reduce the effectiveness of Norfloxacin. If you must take antacids or multivitamins containing aluminium, calcium, iron, magnesium or zinc, take Norfloxacin at least 2 hours before or 6 hours after such products.

Always notify your doctor and pharmacist if you are taking any other medicines, including herbal tonics such as traditional Chinese medicines, supplements and medicines that you buy without a prescription.
What special dietary instructions should I follow?
Avoid taking Norfloxacin together with dairy products such as milk, cheese, yoghurt or ice-cream. Dairy products may reduce the effectiveness of this medicine when taken at the same time. Take Norfloxacin at least 2 hours before or 6 hours after you have taken any dairy products.

Avoid alcohol.
How should I store this medicine?
Store in a cool, dry place away from the reach of children.

Medicines must not be used past the expiry date.
This information is independently developed by MIMS based on norfloxacin-oral and is provided for your reference only. It is not a replacement for and should only be used in conjunction with full consultation with a licensed healthcare professional, the information provided by your pharmacist and/or the manufacturer of the medication. It may not contain all the available information you require and cannot substitute professional medical care, nor does it take into account all individual circumstances. Although great effort has been made to ensure content accuracy, we shall not be held responsible or liable for any claims or damages arising from the use or misuse of the information contained herein, its contents or omissions, or otherwise. Copyright © 2022 MIMS. All rights reserved. Powered by
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