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Monurol Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
Monurol (fosfomycin tromethamine) sachet is used to treat bladder infections. It is an antibiotic. Common side effects include diarrhea, nausea, stomach upset, headache, or dizziness.
Monurol is usually given in only one dose. The recommended dosage of Monurol for women 18 years of age and older for uncomplicated urinary tract infection (acute cystitis) is one sachet, dissolved in water and taken orally. Monurol may interact with metoclopramide (Reglan). Other drugs may affect Monurol. Tell your doctor about all prescription and over-the-counter medications and supplements you use. During pregnancy, Monurol should be used only when prescribed. It is unknown if this drug passes into breast milk. Consult your doctor before breast-feeding.
Our Monurol (fosfomycin tromethamine) sachet Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is Patient Information in Detail?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
Monurol in Detail - Patient Information: Side Effects
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Less serious side effects may be more likely to occur, such as:
- diarrhea, nausea, stomach pain or upset;
- stuffy nose, sore throat;
- menstrual pain;
- back pain; or
- vaginal itching or discharge.
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. You may report side effects to FDA at 1-800-FDA-1088.
Read the entire detailed patient monograph for Monurol (Fosfomycin)
What is Patient Information Overview?
A concise overview of the drug for the patient or caregiver from First DataBank.
Monurol Overview - Patient Information: Side Effects
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor immediately if any of these unlikely but serious side effects occur: vaginal discomfort, stomach/abdominal pain.
Tell your doctor immediately if any of these rare but very serious side effects occur: vision changes, dark urine, yellowing of the eyes/skin, unusual weakness.
This medication may rarely cause a severe intestinal condition (Clostridium difficile-associated diarrhea) due to a type of resistant bacteria. This condition may occur weeks to months after treatment has stopped. Tell your doctor immediately if you develop: persistent diarrhea, abdominal or stomach pain/cramping, blood/mucus in your stool.
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Read the entire patient information overview for Monurol (Fosfomycin)
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Monurol FDA Prescribing Information: Side Effects
Clinical Trials: In clinical studies, drug related adverse events which were reported in greater than 1% of the fosfomycin-treated study population are listed below:
Drug-Related Adverse Events (%) in Fosfomycin and Comparator
In clinical trials, the most frequently reported adverse events occurring in > 1% of the study population regardless of drug relationship were: diarrhea 10.4%, headache 10.3%, vaginitis 7.6%, nausea 5.2%, rhinitis 4.5%, back pain 3.0%, dysmenorrheal 2.6%, pharyngitis 2.5%, dizziness 2.3%, abdominal pain 2.2%, pain 2.2%, dyspepsia 1.8%, asthenia 1.7%, and rash 1.4%.
The following adverse events occurred in clinical trials at a rate of less than 1%, regardless of drug relationship: abnormal stools, anorexia, constipation, dry mouth, dysuria, ear disorder, fever, flatulence, flu syndrome, hematuria, infection, insomnia, lymphadenopathy, menstrual disorder, migraine, myalgia, nervousness, paresthesia, pruritus, SGPT increased, skin disorder, somnolence, and vomiting.
One patient developed unilateral optic neuritis, an event considered possibly related to MONUROL therapy.
Serious adverse events from the marketing experience with MONUROL outside of the United States have been rarely reported and include: angioedema, aplastic anemia, asthma (exacerbation), cholestatic jaundice, hepatic necrosis, and toxic megacolon.
Although causality has not been established, during post marketing surveillance, the following events have occurred in patients prescribed Monurol: anaphylaxis and hearing loss.
Significant laboratory changes reported in U.S. clinical trials of MONUROL without regard to drug relationship include: increased eosinophil count, increased or decreased WBC count, increased bilirubin, increased SGPT, increased SGOT, increased alkaline phosphatase, decreased hematocrit, decreased hemoglobin, increased and decreased platelet count. The changes were generally transient and were not clinically significant.
Read the entire FDA prescribing information for Monurol (Fosfomycin)
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Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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