Hiprex (Methenamine Hippurate)

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Hiprex Brand
Dosage Quantity & Price
Methenamine Hippurate (Generic alternate to Hiprex) Generic

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Table of contents:

Hiprex, known by its generic name Methenamine Hippurate is an antibiotic medication indicated to treat and prevent recurrent urinary tract infections (UTIs). It belongs to a class of drugs called Antibiotics. Hiprex works by releasing formaldehyde, which helps balance out the levels of bacteria in the urine. It is effective in treating UTIs, as well as providing a protective effect against recurrences.

Methenamine Hippurate helps prevent bacteria from growing and causing infection. It is an antimicrobial agent used to treat and prevent urinary tract infections. It contains an active ingredient called methenamine which helps make the urine acidic. When the urine is acidic, the methenamine breaks down into formaldehyde and ammonia, which together kill certain bacteria. It is only effective against bacterial infections in the urinary tract, not viral or fungal infections.

Uses and Dosage

Hiprex (Methenamine Hippurate) comes in the form of a tablet to be taken by mouth as directed by your doctor. The dosage is based on the brand of methenamine you are prescribed your medical condition, and your response to treatment. For children, dosage is also based on age and weight.

The typical dosing for Hiprex is 1 gram by mouth twice a day (morning and night) for people over 12 years old, and 0.5 gram to 1 gram by mouth twice a day (morning and night) for people 6 to 12 years old.

Side Effects

Common Side Effects of Hiprex (Methenamine Hippurate):

  • Abdominal cramps
  • Diarrhea
  • Loss of appetite
  • Nausea
  • Stomach upset
  • Vomiting

Serious Side Effects of Hiprex (Methenamine Hippurate)

  • Bladder irritation
  • Bloody or pink urine
  • Mouth sores
  • Muscle cramps
  • Painful and frequent urination
  • Swelling of the extremities
  • Unusual headache

Form and Strength

Hiprex (Methenamine Hippurate) is available in the following forms and strengths:

Hiprex: Tablet

  • 1 g


  • Before taking methenamine, tell your doctor or pharmacist if you are allergic to it or to formaldehyde, and if you have any other allergies. Ask your pharmacist about potential inactive ingredients that can cause allergic reactions or other problems.
  • Before using methenamine, tell your doctor or pharmacist your medical history, especially if you have kidney problems, liver problems, or dehydration. Make sure to mention any allergies you have and ask your pharmacist about potential inactive ingredients that could cause allergic reactions or other problems.
  • Methenamine hippurate may cause drowsiness or dizziness, caution when driving or operating heavy machinery.
  • During pregnancy, discuss the risks and benefits of taking Hiprex with your doctor before using it. Your doctor will determine if the benefits of taking this medicine outweigh the risks and can help you decide if this medication is right for you.
  • Tell your doctor or pharmacist if you have any other medical conditions, such as kidney or liver problems, or if you are pregnant or breastfeeding.
  • Methenamine hippurate may interact with other drugs, tell your doctor or pharmacist what other medications you are taking.

Frequently Asked Questions (FAQ)

How do I take Hiprex?

Hiprex should be taken as directed by your doctor. It is usually taken orally in the form of a tablet or capsule. It is important to take Hiprex with food or milk to avoid stomach upset.

Can Hiprex be used to treat children?

Hiprex is not recommended for children under the age of 12 and should be used with caution in children between the ages of 12 and 18.

How long should I take Hiprex?

The length of time you should take Hiprex will depend on your symptoms and the severity of your infection. Generally, Hiprex should be taken for at least 5-7 days to ensure that the infection is fully treated.

Can I take Hiprex with other medications?

Do not talk to your doctor or pharmacist before taking Hiprex with any other medications. Some medications may interact with Hiprex, so it is important to inform your doctor or pharmacist of all the medications you are currently taking.


It's important to purchase Hiprex from verified Canadian pharmacy.

Additional information

Generic name:

Methenamine Hippurate





Quantities Available:



Online Pharmacies Canada has provided information from third parties intended to increase awareness and does not contain all the information about Hiprex (Methenamine Hippurate). Talk to your doctor or other qualified medical practitioners for medical attention or advice, or if you have any concerns about Hiprex (Methenamine Hippurate).