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Generical name: methenamine (pronounced meh). -THEHN-a-meen meh-THEHN-a-meen
The class of drug: urinary anti-infectives

What is Hiprex?

Hiprex can be described as an antibacterial medication that is used to prevent or treat bladder infections in adults and children who are at least 6 years old. Hiprex can also be used for reasons not mentioned in this guideline.

Side effects of Hiprex

Contact a medical professional immediately. Get medical attention immediately if you notice symptoms or warning signs of an allergic response, like hives, trouble breathing, or swelling of your lips, face, or tongue.

Hiprex could result in severe adverse reactions. Consult your physician immediately in the event that you experience:

  • Increased urination
  • Painful urination;
  • The presence of blood in your urine or
  • Inflammation, shortness of breath.

Common hiprex-related side effects could include:

  • Urination that is painful;
  • Nausea, vomiting, or
  • Rash, itching.

This isn't a complete list of all the side effects. Others could happen. Contact your physician to seek medical advice on adverse effects. You can report adverse reactions to the FDA at 1-800-FDA-1088.


Only use it according to the directions. Talk to your doctor if you are taking other medications or have any other medical conditions or allergies.

Before you take this drug

You shouldn't take Hiprex if you're allergic to it or if you suffer from:

  • Kidney disease;
  • Serious liver condition severe liver disease
  • If you are dehydrated.

Consult a physician or pharmacist to determine if Hiprex is appropriate for you if you have previously had liver issues. Talk to your doctor before using this medication if you are expecting Do not breastfeed.

How to take Hiprex?

Follow exactly the instructions on the label or as recommended by your physician. Hiprex is most effective when your urine is low in pH as well as acidic. You can test the pH of your urine at home by using urine test strips that you can purchase from a drugstore. Your doctor may periodically check your urine to make sure that the infection is cleared.

Find out about the foods you should consume or avoid to keep your urine from becoming acidic. Your doctor might also prescribe other drugs. Take plenty of fluids. Follow your physician's medication and diet instructions precisely.

Continue to take this medication even if symptoms get better. Inadequate doses can make your condition immune to medications. Hiprex is not a treatment for the symptoms of a viral disease (the flu or a common cold).

This medication can alter the results of certain tests. Be sure to inform any doctor treating you that you're taking Hiprex.Do not take Hiprex for the treatment of any illness that hasn't been evaluated by your physician.Do not share this medication with anyone else, even if they share the same symptoms as you do.

Keep the bottle at room temperature, free of heat, moisture, and light. Close the bottle when not being used.

Do I be concerned if I miss a dose?

Do not take the medicine for as long as you are able, but avoid any missed doses if it's nearing the time to take the next dose. Don't take two doses at a time.

What will happen if I take excessively?

Get medical attention in an emergency or contact the Poison Help Line toll-free at 1-800-222-1222.

What should be avoided?

Beware of taking too much Hiprex, as you may be afflicted with side effects like urinary irritation, pain in the urination area, and blood in the urine.

Interaction with other drugs

Other medications can impact Hiprex, including one that is a sulfa medication. Inform your doctor of the other medicines you take. This includes prescription and over-the-counter medications, vitamins, and herbs.