Hiprex (Methenamine Hippurate): Uses, Dosage, Side ... - RxList

What Is Hiprex?

Hiprex (methenamine hippurate) is a urinary anti-infective medicine used to treat and prevent urinary tract infections. Hiprex is available in generic form.

What Are Side Effects of Hiprex?

Hiprex may cause serious side effects including:

• painful urination,
• increased urination,
• blood in the urine, and
• worsening symptoms

Get medical help right away, if you have any of the symptoms listed above.

Common side effects of Hiprex include:

• nausea,
• vomiting,
• upset stomach,
• diarrhea,
• abdominal cramps,
• painful or difficult urination,
• loss of appetite, and
• skin rash.

Seek medical care or call 911 at once if you have the following serious side effects:

• Serious eye symptoms such as sudden vision loss, blurred vision, tunnel vision, eye pain or swelling, or seeing halos around lights;
• Serious heart symptoms such as fast, irregular, or pounding heartbeats; fluttering in your chest; shortness of breath; and sudden dizziness, lightheadedness, or passing out;
• Severe headache, confusion, slurred speech, arm or leg weakness, trouble walking, loss of coordination, feeling unsteady, very stiff muscles, high fever, profuse sweating, or tremors.

This document does not contain all possible side effects and others may occur. Check with your physician for additional information about side effects.

Dosage for Hiprex

Taking higher than recommended doses of Hiprex may cause bladder irritation, painful or frequent urination, and bloody or pink urine. Tell your doctor if you have these symptoms. The dose of Hiprex for adults and children over 12 years of age is 1 tablet (1.0 g) twice daily (morning and night). The pediatric dose for children 6 to 12 years is 1/2 to 1 tablet (0.5 to 1.0 g) twice daily (morning and night).

What Drugs, Substances, or Supplements Interact with Hiprex?

Hiprex may interact with carbonic anhydrase inhibitors, sulfa drugs, diuretics (water pills), or products containing aluminum, calcium, magnesium, sodium bicarbonate, potassium or sodium citrate, or citric acid (such as antacids, vitamin or mineral pills, urinary alkalinizers, and other medications). Tell your doctor all medications and supplements you use.

Hiprex During Pregnancy and Breastfeeding

During pregnancy, Hiprex should be used only when prescribed. This drug passes into breast milk and the effect on a nursing infant is unknown. Consult your doctor before breastfeeding.

Additional Information

Our Hiprex (methenamine hippurate) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.