Norfox 400mg Tablet

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Dr. Mohd Izzat Amir Bin Awang
Reviewed byDr. Mohd Izzat Amir Bin AwangDoctor of Medicine (MD), University of Mansoura - Manchester
Dr. Adeline Carol Peters
Written byDr. Adeline Carol PetersBachelor of Medicine and Bachelor of Surgery (MBBS) — Manipal Academy of Higher Education (MAHE)

Last updated:

Overview

Norfox 400mg Tablet is a prescription-only medicine (POM) that contains Norfloxacin 400mg. It is supplied as a tablet and is dispensed in Malaysia only against a valid prescription issued by a registered doctor.

Under Malaysian rules for prescription medicines, this page carries product, safety and handling information only. Your doctor or pharmacist will explain whether this medicine is suitable for you, the dose you should take, and how long you should take it.

On DoctorOnCall, Norfox 400mg Tablet is reviewed by a licensed doctor through an online consultation and dispensed by a registered pharmacist before delivery. Always follow the instructions on your prescription label and the package insert supplied with the product, and do not share this medicine with anyone else.

Directions for Use

Take Norfox 400mg Tablet on an empty stomach, at least one hour before or two hours after meals, with a full glass of water, and drink plenty of fluids throughout the day to help flush the urinary tract. Avoid taking it at the same time as antacids, calcium, iron, or zinc supplements, as these reduce its absorption.

Dosage

The usual dose of Norfox 400mg Tablet for adults is 400mg taken twice daily, with the course length depending on the type and severity of infection being treated. Your doctor will determine the correct dose and duration for your condition, and it is important to complete the full course even if symptoms improve early.

Storage Instructions

Store below 30°C in a dry place, away from direct sunlight and out of reach of children.

Side Effects

  • Nausea or stomach upset
  • Dizziness or headache
  • Diarrhea
  • Rash or skin sensitivity
  • Insomnia or sleep disturbances

Contraindications

  • Known hypersensitivity to norfloxacin or other fluoroquinolone antibiotics
  • Children and growing adolescents (risk of effects on developing joints/cartilage)
  • Pregnancy and breastfeeding
  • History of tendon disorders or tendon rupture related to fluoroquinolone use
  • Myasthenia gravis (may worsen muscle weakness)

Drug / Food Interactions

  • Antacids, and calcium, iron, magnesium, or zinc supplements significantly reduce norfloxacin absorption – space doses at least 2 hours apart
  • NSAIDs (e.g. ibuprofen) taken together may increase the risk of central nervous system effects, including seizures
  • Warfarin’s blood-thinning effect may be enhanced, requiring closer INR monitoring
  • Theophylline blood levels may increase, raising the risk of theophylline-related side effects

Quick Tips

  • Complete the full course of treatment even if you feel better before it ends
  • Drink plenty of water throughout the day while taking this medicine
  • Avoid excessive sun exposure and use sun protection, as this medicine can increase photosensitivity
  • Space out antacids and mineral supplements from your dose by at least 2 hours
  • Stop the medicine and contact your doctor immediately if you notice tendon pain or swelling

Ingredients / Active Ingredients

  • Norfloxacin 400mg

Safety Advice

Pregnancy

Use With Care

This medicine should be used cautiously during pregnancy. Monitoring may be required.

Breastfeeding

Use With Care

Use with caution. Monitor infant for potential adverse reactions.

Kidney

Use With Care

Use cautiously. Dose adjustment or monitoring may be required.

Liver

Use With Care

Use cautiously. Liver function monitoring may be required.

Alcohol

Use With Care

Caution is advised when consuming alcohol with this medicine.

Driving

Use With Care

Use caution while driving until you know how this medicine affects you.

Frequently Asked Questions

Product Specifications

ClassificationPrescription medicine
Ingredients / Active IngredientsNorfloxacin
Pack Size10s
Shelf LifeUse this product before the expiry date stated on the packaging. Do not use the medicine if the expiry date has passed.

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