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Home > Drugs > Urex
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Urex

https://themeditary.com/drug/urex-22206.html
Medically Reviewed by Oluni Odunlami, MD TheMediTary.Com | Reviewed: Oct 01, 2023  Additional Content by TheMediTary.Com

Generic name: Methenamine

Pregnancy & Lactation: Risk data not available

Contents
Uses Warnings Before Taking Dosage Side effects Interactions

What is Urex?

Methenamine is an antibacterial medicine used to treat or prevent bladder infections in adults and children at least 6 years old.

Methenamine may also be used for purposes not listed in this medication guide.

Warnings

You should not use methenamine if you are allergic to it, or if you have:

  • kidney disease;
  • severe liver disease; or
  • if you are dehydrated.

Ask a doctor or pharmacist if this medicine is safe to use if you've ever had liver problems.

Ask a doctor before using this medicine if you are pregnant.

Do not breastfeed.

How should I use Urex

Use Urex (Oral) exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.

Use exactly as directed on the label, or as prescribed by your doctor.

Methenamine works best when your urine has a low pH and is acidic. You can measure your pH levels at home using urine test strips purchased from a pharmacy. Your doctor may occasionally test your urine to make sure an infection has cleared.

Learn about the foods to eat or avoid to help keep your urine acidic. Your doctor may also prescribe other medicines. Drink plenty of liquids.

Follow your doctor's diet and medication instructions very closely.

Keep using this medicine even if your symptoms quickly improve. Skipping doses could make your infection resistant to medication. Methenamine will not treat a viral infection (flu or a common cold).

This medicine can affect the results of certain medical tests. Tell any doctor who treats you that you are using methenamine.

Do not use methenamine to treat any condition that has not been checked by your doctor.

Do not share this medicine with another person, even if they have the same symptoms you have.

Store at room temperature away from moisture, heat, and light. Keep the bottle tightly closed when not in use.

What should I do if I missed a dose of Urex (Oral)?

Take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.

Urex side effects

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

Call your doctor at once if you have:

  • increased urination;
  • painful urination;
  • blood in your urine; or
  • swelling, shortness of breath.

Common side effects may include:

  • painful urination;
  • nausea, vomiting; or
  • rash, itching.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect Urex?

Avoid taking extra methenamine, or you could have side effects such as bladder irritation, pain, increased urination, and blood in the urine.

More about Urex (Methenamine)

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Drug class: Drugs
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Contents
Uses Warnings Before Taking Dosage Side effects Interactions
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