Antibiotics Home > Noroxin

Noroxin is a type of antibiotic prescribed for treating certain bacterial infections, including gonorrhea, prostatitis, and urinary tract infections. This medication works by interfering with bacteria's ability to multiply. It comes in the form of a tablet, and is typically taken every 12 hours. Possible side effects may include headaches, nausea, and dizziness.

What Is Noroxin?

Noroxin® (norfloxacin) is a prescription medication that belongs to a group of drugs called fluoroquinolones, or "quinolones" for short. Like other quinolones, Noroxin is an antibiotic and is used to treat bacterial infections. Specifically, it is approved to treat the following types of infections:
(Click Noroxin Uses for more information on this topic, including possible off-label uses.)

Who Makes This Medication?

Noroxin is made by Merck & Co., Inc.

How Does Noroxin Work?

Noroxin works by killing the bacteria that cause the infections. Specifically, Noroxin interferes with two bacterial enzymes called topoisomerase IV and DNA gyrase. These enzymes are necessary for the bacteria to copy and repair DNA, which are critical steps needed for the bacteria to multiply.

When and How to Take It

Some general considerations to keep in mind during treatment with Noroxin include the following:
  • Noroxin comes in tablet form. It is usually taken every 12 hours, although for gonorrhea, it is usually just given as a single, one-time dose.
  • This medication should be taken on an empty stomach at least one hour before or two hours after a meal.
  • Noroxin should not be taken with milk or calcium-fortified juices, such as orange juice. Take Noroxin with a glass of water.
  • Make sure you drink plenty of fluids to stay well hydrated during treatment.
  • Noroxin is used to treat bacterial infections. It will not treat infections caused by viruses, such as the common cold or flu.
  • You should start to feel better within a couple of days of treatment. However, this does not mean your infection is gone. Make sure you finish the entire course of this medicine. Stopping it too early may cause your symptoms to return or lead to antibiotic resistance.
  • For the medication to work properly, it must be taken as prescribed.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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