What is Monurol: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Dec 30, 2020

Monurol overview

BRAND NAMES:

  • Monurol

Generic Names:

  • Fosfomycin Tromethamine

Uses:

  • Treats urinary tract infections (UTI). This medicine is an antibiotic.

Therapeutic Classes:

  • Antibiotic

Forms:

  • Powder

How it’s taken:

  • By mouth

What is Monurol used for?

What form(s) does Monurol come in

  • Powder

What are common Monurol doses?

  • Packet 3GM

Common Monurol prescriptions

  • Monurol
    3gm packet

How to take Monurol

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Only one dose of this medicine is needed to treat your UTI. The medicine stays in your body to fight the infection.

  • Oral routeYou may take this medicine with or without food.

  • The medicine is an orange-flavored powder that must be mixed with water before using. Never swallow the medicine in its dry form.

  • To use:Open the packet and pour all of the powder into 3 to 4 ounces (1/2 cup) of water. Do not use hot water.Stir until the powder is dissolved, and drink the mixture right away.

  • Drink extra fluids so you will pass more urine while you are using this medicine. This will keep your bladder working well and help prevent bladder problems.

  • The medicine is an orange-flavored powder that must be mixed with water before using. Never swallow the medicine in its dry form.

  • Drink extra fluids so you will pass more urine while you are using this medicine. This will keep your bladder working well and help prevent bladder problems.

  • Oral routeYou may take this medicine with or without food.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Only one dose of this medicine is needed to treat your UTI. The medicine stays in your body to fight the infection.

  • To use:Open the packet and pour all of the powder into 3 to 4 ounces (1/2 cup) of water. Do not use hot water.Stir until the powder is dissolved, and drink the mixture right away.

What to do if you miss a dose of Monurol

  • You should only use one dose of the medicine to treat your UTI.

  • Oral routeAsk your pharmacist, doctor, or health caregiver about the best way to dispose of any outdated medicine or medicine no longer needed.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

Monurol contraindications

  • You should not use this medicine if you have had an allergic reaction to fosfomycin.

Monurol warnings

  • Make sure your doctor knows if you are pregnant or breastfeeding, or if you have kidney disease or diarrhea.

  • This medicine may cause diarrhea, and in some cases it can be severe. It may occur 2 months or more after you stop taking this medicine. Do not take any medicine to treat diarrhea without first checking with your doctor. If you have any questions or if mild diarrhea continues or gets worse, check with your doctor.

  • Call your doctor if your symptoms do not improve or if they get worse.

  • Vision changes.

  • Yellowing of your skin or the whites of your eyes.

Monurol interactions

  • Make sure your doctor knows if you are using any medicine that causes food to move more quickly through your stomach, such as metoclopramide (Reglan®).

  • This medicine may cause diarrhea, and in some cases it can be severe. It may occur 2 months or more after you stop taking this medicine. Do not take any medicine to treat diarrhea without first checking with your doctor. If you have any questions or if mild diarrhea continues or gets worse, check with your doctor.

  • Call your doctor if your symptoms do not improve or if they get worse.

Monurol side effects

Serious Side Effects

  • Severe and watery diarrhea that may contain blood.

  • Severe stomach pain.

  • Vision changes.

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Yellowing of your skin or the whites of your eyes.

Less Serious Side Effects

  • Mild diarrhea, nausea, heartburn, indigestion, or upset stomach.

  • Headache or dizziness.

  • Weakness.

  • Vaginal itching or discharge.

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