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Methenamine

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Notes
Related terms
Uses
Dosing
Safety
Author information

Notes

    Related terms
    • Brand Names: U.S.: Hiprex®
    • Brand Names: Canada: Dehydral®;Hiprex®;Mandelamine®;Urasal®
    • Mexican Brand Names: Mandepiril-S
    • Pharmacologic Category: Antibiotic, Miscellaneous

    Uses
    • It is used to stop or treat a bladder infection.
    • Methenamine works to harm the bacteria and fight the infection.

    Dosing

    How to take

    • To gain the most benefit, do not miss doses.
    • Use as you have been told, even if you are feeling better.
    • Take this drug with food.

    Missed Dose

    • Take a missed dose as soon as you think about it.
    • If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
    • Do not take 2 doses at the same time or extra doses.

    Storage

    • Store at room temperature.
    • Protect from water. Do not store in a bathroom or kitchen.

    Safety



    Warnings

    • Unsafe side effects may happen. This drug cannot be taken while you are taking some other drugs. Check all the drugs you are taking with your doctor.

    Avoid

    • If you have an allergy to methenamine or any other part of this drug.
    • Tell your doctor if you are allergic to any drugs. Make sure to tell about the allergy and what signs you had. This includes telling about rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
    • If you have any of these health problems: Kidney disease, very bad fluid loss, or very bad liver disease.

    Precautions

    • If you are allergic to tartrazine, talk with your doctor. Some products have tartrazine.
    • If you have liver disease, talk with your doctor.
    • Check all drugs you are taking with your doctor. This drug may not mix well with some other drugs.
    • You may need to check the acid content (pH) of your urine using a dipstick test.
    • Do not take aspirin, antacids, or drugs that raise the pH of the urine while on this drug.
    • Avoid citrus fruits, dairy products, and some veggies while taking this drug.
    • Some types of water pills may lower the effects of this drug. Talk with the doctor.
    • Tell your doctor if you are pregnant or plan on getting pregnant.
    • Tell your doctor if you are breast-feeding.

    Side Effects

    • Upset stomach or throwing up. Many small meals, good mouth care, sucking hard, sugar-free candy, or chewing sugar-free gum may help.
    • Bladder pain or pain when passing urine or change in how much urine is passed.

    Monitoring

    • Change in the health problem being treated. Is it better, worse, or about the same?

    Contact a healthcare provider

    • If you think there was an overdose, call your local poison control center or ER right away.
    • Signs of a very bad reaction to the drug. These include wheezing; chest tightness; fever; itching; bad cough; blue skin color; seizures; or swelling of face, lips, tongue, or throat.
    • Very upset stomach or throwing up.
    • Very loose stools, even after drug is stopped.
    • Any rash.
    • Health problem is not better or you are feeling worse.

    General Statements

    • If you have a very bad allergy, wear an allergy ID at all times.
    • Do not share your drugs with others and do not take anyone else's drugs.
    • Keep all drugs out of the reach of children and pets.
    • Most drugs may be thrown away in household trash after mixing with coffee grounds or kitty litter and sealing in a plastic bag.
    • In Canada, take any unused drugs to the pharmacy. Also, visit http://www.hc-sc.gc.ca/hl-vs/iyh-vsv/med/disposal-defaire-eng.php#th to learn about the right way to get rid of unused drugs.
    • Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
    • Call your doctor for help with any side effects. If in the U.S., you may also call the FDA at 1-800-FDA-1088 or if in Canada, you may also call Health Canada's Vigilance Program at 1-866-234-2345.
    • Talk with the doctor before starting any new drug, including OTC, natural products, or vitamins.
    • Read the package insert for more details.

    Author information
    • Copyright © 1978-2010 Lexi-Comp Inc. All rights reserved.

    Copyright © 2011 Natural Standard (www.naturalstandard.com)


    The information in this monograph is intended for informational purposes only, and is meant to help users better understand health concerns. Information is based on review of scientific research data, historical practice patterns, and clinical experience. This information should not be interpreted as specific medical advice. Users should consult with a qualified healthcare provider for specific questions regarding therapies, diagnosis and/or health conditions, prior to making therapeutic decisions.

       

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