Norfloxacin as an antibacterial medication to treat UTI

Noroxin (Norfloxacin) is an antibacterial medication used to treat infections in the urinary tract (UTI) and prostate. Generic Noroxin provides quick relief from irritating infections in some of your most sensitive areas by fighting off harmful bacteria and may also be used to treat cases of gonorrhea. It is one of Merck’s bestselling drugs and antibiotics.


Noroxin (Norfloxacin) is an antibiotic that provides relief from urinary tract infections (UTI), prostate infections, and some cases of gonorrhea. This antibacterial agent is classified under a group of antibiotics known as fluoroquinolones. Noroxin may be used for treatments not listed here. Consult your doctor before taking this medication for either intended or alternative uses.

How to take

Contact your doctor for the precise instructions that apply to you. Take Noroxin with a full glass of water, and continue to keep well hydrated throughout the day while taking this medication. Do not take Noroxin with food. Noroxin may be taken an hour before a meal or two hours after completing a meal. Do not eat dairy or milk products for two hours before taking this medication.

Side effects

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop taking Norfloxacin and call your doctor at once if you have sudden pain, a snapping or popping sound, bruising, swelling, tenderness, stiffness, or loss of movement in any of your joints. Resting the joint until you receive medical care or instructions

Call your doctor at once if you have any of these serious side effects:

  • diarrhea that is watery or bloody;
  • headache with chest pain and severe dizziness, fainting, fast or pounding heartbeats;
  • Irregular heart rhythm, new or worsening cough, trouble breathing;
  • Hallucinations, tremors, feeling restless or anxious, unusual thoughts or behavior, seizures (convulsions);
  • ringing in your ears, vision problems, pain behind your eyes;
  • confusion, nausea and vomiting, swelling, rapid weight gain, urinating less than usual or not at all;
  • numbness, burning, pain, or tingly feeling in your hands or feet;
  • Pain in your upper stomach, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
  • Pale skin, easy bruising or bleeding, muscle weakness, fever, swollen glands, general ill feeling;
  • at the first sign of any skin rash, no matter how mild; or
  • Fevers, sore throats, swelling in your face or tongue, burning in your eyes, skin pain, followed by a red or purple skin rash that spreads (especially in the face or upper body) and causes blistering and peeling.

Always read the ingredients before taking this or any other medication to ensure that there are no elements that may elicit an allergic reaction.


Do not buy Noroxin if you have a history of myasthenia gravis or if you have ever had a negative reaction to norfloxacin.

Patients over 60 years of age, those taking any steroid medication, or people who have undergone heart, lung, or kidney transplants are at greater risk of experiencing tendon tearing or swelling while taking Noroxin.

Before taking this medication, consult your doctor if you have a history of any of the following medical conditions:

  • heart rhythm disorder,
  • kidney disease,
  • liver problems,
  • head injury,
  • brain tumors,
  • pseudotumor cerebri,
  • muscle weakness,
  • joint problems,
  • epilepsy,
  • seizures,
  • hypokalemia or a history of Long QT syndrome in your past or in your family’s history.

Consult your doctor if you are pregnant, breastfeeding, or plan on becoming pregnant before taking this medication.

Drug interactions

Tell your doctor about all other medicines you use, especially:

  • a blood thinner such as warfarin (Coumadin, Jantoven);
  • clozapine (Clozaril, FazaClo);
  • cyclosporine (Neoral, Sandimmune, Gengraf);
  • glyburide (Micronase, Diabeta, Glynase);
  • nitrofurantoin (Macrodantin, Macrobid);
  • probenecid (Benemid);
  • ropinirole (Requip);
  • tacrine (Cognex);
  • theophylline (Elixophyllin, Theo-24, Theochron, Uniphyl);
  • tizanidine (Zanaflex);
  • an NSAID (non-steroidal anti-inflammatory drug) such as ibuprofen (Advil, Motrin), naproxen (Aleve, Naprosyn, Naprelan, Treximet), celecoxib (Celebrex), diclofenac (Arthrotec, Cambia, Cataflam, Voltaren, Flector Patch, Pennsaid, Solareze), indomethacin (Indocin), meloxicam (Mobic), and others; or
  • steroid medication (prednisone and others).

This list is not complete and other drugs may interact with Norfloxacin.

Missed dose

Do not take more than your recommended dosage. Take missed doses as soon as you remember, unless it is nearly time for your next treatment.


Keep medication in a cool, dry place away from heat and moisture. Dispose of any unused medication past the point of expiry. Keep it out of the reach of children and pets.