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Урофосцин

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Урофосцин

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Medically reviewed

Laura Arias

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

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Overview of Урофосцин

Quick Facts

Property Description
Active ingredient Fosfomycin (as Fosfomycin trometamol)
Form Granules for oral solution (Oral powder)
Pharmacological class Antibiotic (Phosphonic acid derivative)
General purpose Elimination of susceptible bacterial pathogens
Origin Synthetic origin

What Type of Medicine is Урофосцин and What is its Active Ingredient?

Урофосцин (Urofoscin) is a prescription-only, synthetic antimicrobial agent that belongs to the general class of antibiotics. Its active ingredient is Fosfomycin, specifically utilized as the salt Fosfomycin trometamol in this formulation. Урофосцин is a brand name and is typically positioned for the treatment of acute bacterial infections, a common application clinically recognized for Fosfomycin’s unique properties.

The core identity of Урофосцин places it within the unique pharmacological group of phosphonic acid derivatives. This distinctive chemical structure, a compound of synthetic origin, differentiates it from many common antibiotic families. The World Health Organization (WHO) considers Fosfomycin an essential medicine, signifying its recognized global importance in antimicrobial therapy.


Understanding the Form, Origin, and General Purpose

Урофосцин is supplied as granules for oral solution, an oral powder packaged typically in a sachet, and its general purpose is the decisive, bactericidal elimination of susceptible bacteria. The product is a single active ingredient preparation, meaning its therapeutic effect is singularly focused on the properties of Fosfomycin, offering a unique benefit compared to multi-drug formulations.

This specific dosage form is designed for oral administration. The drug achieves its therapeutic effect by acting as an irreversible cell wall synthesis inhibitor. This mechanism, which blocks an early step in bacterial cell wall synthesis, is unique and often provides a lack of cross-resistance with many other antibacterial agents. This suggests that its specialized action may remain effective when other standard antibiotics are not, supporting its use in situations where common resistance is a concern.

Regulatory References

  1. WHO Essential Medicines List (Oral Fosfomycin)
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What side effects are possible with Урофосцин?

Possible Side Effects and Safety Information

The official safety documentation for Урофосцин (Fosfomycin trometamol) classifies adverse reactions based on frequency and the physiological system affected, providing a structured overview of its risk profile. These classifications are established by government regulatory bodies.


Frequency-Classified Adverse Reactions

The most frequently documented events, classified as Common (up to 1 in 10 people), primarily involve the gastrointestinal and nervous systems. These reactions include diarrhea, headache, nausea, and dizziness. Reactions classified as Uncommon (up to 1 in 100 people) include vomiting, abdominal pain, rash, and fatigue. Rare or very rare occurrences, such as aplastic anemia or optic neuritis, are also listed in regulatory texts.


System-Organ Classes and Serious Reactions

The safety profile involves effects across several System-Organ Classes, including Gastrointestinal disorders, Nervous system disorders, Immune system disorders, and Skin and subcutaneous tissue disorders.

Serious adverse reactions that are documented in official labeling, though rare, include life-threatening hypersensitivity responses like anaphylactic shock and swelling known as angioedema. Severe bowel inflammation, such as Pseudomembranous colitis, is also officially noted as a possible safety concern that may occur during treatment or several weeks after stopping the antibiotic.


Population-Specific Safety Constraints

Official regulatory documents define specific safety limitations. The medicine is contraindicated in severe renal failure (creatinine clearance <10 mL/min). Furthermore, safety and effectiveness have not been established in children 12 years of age and under for the common indication. The medicine is also contraindicated in patients with known hypersensitivity to any of its components.

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Overdose and Emergency Response

When an overdose of Урофосцин (Fosfomycin trometamol) is suspected, immediate medical attention must be sought. Regulatory guidance on overdose experience with the oral formulation is limited, but specific manifestations have been officially documented.

Documented Overdose Manifestations

Documented symptoms observed in cases of overdose include vestibular loss, impaired hearing, metallic taste, and a general decline in taste perception. While observed primarily with the parenteral administration of Fosfomycin, signs such as hypotonia, somnolence, and significant electrolyte disturbances may indicate potential systemic severity and underscore the need for urgent professional monitoring.

Required Emergency Actions

In the event of an overdose, the patient must be monitored, and treatment should be symptomatic and supportive. This monitoring specifically requires checking plasma/serum electrolyte levels. The official guidance recommends rehydration to help promote the urinary elimination of the active substance. For severe overdose scenarios, regulatory labeling states that Fosfomycin is effectively cleared from the body by haemodialysis. No specific antidote is mentioned in the official prescribing information.

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Therapeutic Uses of Урофосцин

What Урофосцин Treats: Main Uses and Benefits

Урофосцин (Fosfomycin) is relevant for managing conditions characterized by acute or disruptive episodes of bacterial infection in the lower urinary tract. This agent is commonly used across therapeutic domains where short-term symptomatic support is appropriate, particularly for the treatment of acute, uncomplicated cystitis and for infection prophylaxis (prevention) linked to transurethral surgical procedures. This medicine is applied to address groups of symptoms that appear suddenly or fluctuate, such as dysuria (painful urination), frequent and sudden urinary urgency, and associated lower abdominal discomfort. In specialized clinical settings, it may also be part of the management strategy for infections involving multidrug-resistant organisms.

The primary patient benefit is that treatment may contribute to easing the overall symptom load, which helps patients cope more steadily during difficult episodes by addressing the susceptible pathogen.

“The use of an appropriate antibiotic may help support the clinical management of the bladder infection, easing symptoms that interfere with daily comfort.”

Quick Fact: Relief for Acute UTI Symptoms
Primary Indication Acute uncomplicated bacterial cystitis.
Symptom Focus Painful urination, urinary urgency, and frequency.
Patient Benefit Supports improved comfort during symptomatic periods.

Regulatory References

  1. National Library of Medicine (NIH) overview
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Eligibility and Restrictions for Use

Who Can and Cannot Use Урофосцин?

The eligibility for Урофосцин (Fosfomycin) is defined by regulatory bodies based on patient characteristics and pre-existing conditions.

Contraindications and Prohibited Use

Use is contraindicated in patients with a known hypersensitivity to Fosfomycin or any of its components. The medicine must not be used in patients with severe renal insufficiency or those undergoing hemodialysis, as this may impair elimination. It is also prohibited for patients with certain hereditary metabolic disorders (e.g., fructose intolerance) due to the sucrose content in the formulation.

Age and Condition Restrictions

Population Group Eligibility Status
Pediatric (leq 12 years) Safety and effectiveness have not been established (U.S. label).
Moderate Renal Impairment Not recommended (e.g., CrCl < 40 mL/min).
Pregnancy/Lactation Use only if clearly needed; excreted in human milk.
Diabetes Mellitus Caution is advised due to the sucrose content.

Eligibility is primarily established for adult and adolescent females for the approved indication. The medicine is not indicated for systemic infections or complicated urinary tract infections like pyelonephritis.

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What should I know about interactions with other medicines?

Interactions with Other Medicines and Products

The interaction profile for Урофосцин (Fosfomycin trometamol) is defined by pharmacokinetic and pharmacodynamic constraints documented in regulatory labeling.


Pharmacokinetic and Timing Constraints

Co-administration with Metoclopramide and other medicinal products that increase gastrointestinal motility is restricted because they are documented to significantly lower the serum concentrations and urinary excretion of Fosfomycin. This reduction in exposure can compromise the intended therapeutic effect.

To prevent reduced absorption, a mandatory timing separation rule applies to food. The medicine must be administered on an empty stomach or separated from meals by approximately two to three hours. Regulatory data confirms that co-administration with Cimetidine has no effect on Fosfomycin's pharmacokinetics.


Pharmacodynamic and Population Constraints

The label includes a warning regarding potential pharmacodynamic interaction with oral anticoagulants, noting that the antibiotic class carries a risk of increased anticoagulant activity (e.g., elevated INR). Additionally, the antibacterial action poses a risk of pharmacodynamic antagonism with live bacterial vaccines, which may reduce the vaccine's effectiveness.

A critical population-specific constraint is established for patients with severe renal impairment (creatinine clearance less than 10 mL/min). Due to the drug's impaired excretion and resulting accumulation, this specific patient population is formally classified as a contraindication.

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Mechanism of Action

Irreversible Blockade of Cell Wall Precursor Synthesis

The mechanism of Fosfomycin (Урофосцин) is centered on the irreversible deactivation of the bacterial enzyme MurA (UDP-N-acetylglucosamine enolpyruvyl transferase). This enzyme catalyzes the first unique step in the creation of peptidoglycan building blocks, which are essential for the bacterial cell wall. Fosfomycin forms a stable, covalent bond with MurA, permanently neutralizing its function.

This highly specific action immediately and permanently halts the production of the cell wall precursors. The resulting inability to maintain structural integrity leads directly to a loss of osmotic stability and subsequent lysis (rupture) of the susceptible bacterial cell, establishing a bactericidal effect.

Active Transport and Mechanistic Constraints

The initiation of the drug's effect is dependent on its active transport into the bacterial cytoplasm via existing membrane transporters, primarily GlpT and UhpT. This dependency highlights a constraint: the mechanism is limited if the bacteria develop resistance by mutating or losing these transporters, which prevents the drug from reaching its internal target. Additionally, the mechanism is limited by acquired bacterial enzymes that chemically inactivate the Fosfomycin molecule.

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Dosage and Administration Information

How to Use Урофосцин — Official Administration Guidelines

The administration of Урофосцин (Fosfomycin trometamol) is defined by a short-course protocol based strictly on regulatory guidelines, distinguishing it from multi-day antibiotic regimens. The medicine is supplied as granules and is intended exclusively for the oral route after complete dissolution.


Administration Scope

Instruction Entity Official Regulatory Statement
Route of administration Oral (via solution, after dissolution).
Dosing schedule Single dose of 3 grams for the primary indication. Two 3 g doses are administered for certain prophylaxis uses.
Timing in relation to meals Must be taken on an empty stomach (2–3 hours after a meal) to optimize absorption. Some guidelines state it can be taken with or without food.
Preparation requirements The entire contents of the sachet must be dissolved in 3 to 4 ounces (90 to 120 mL) of cold water and drunk immediately upon preparation.
Age-group administration rules Not indicated for children 12 years of age and under. Use is generally not recommended in patients with severe renal impairment (creatinine clearance below 10 mL/min).
Special procedural conditions Concomitant use with the gastrointestinal agent metoclopramide must be avoided. The single dose is the maximum recommended for a single acute episode.

Instruction Classifications (High-level)

Classification Pattern
Administration method type Oral (reconstituted liquid).
Frequency pattern Single-use or Intermittent use (for prophylaxis).

Resulting Procedural Structure

Official step sequence:

  • Confirm the 3-gram dose of granules for oral solution.
  • Add 3 to 4 ounces of cold water to the sachet contents.
  • Stir until the granules are completely dissolved.
  • Consume the entire solution immediately, ideally on an empty stomach.

Connection to the overall use protocol

These official instructions define the standard use as a short-course, one-time intervention delivered via a specific oral preparation. The necessity of dilution and immediate ingestion is a critical requirement for proper delivery and absorption. The protocol is further constrained by explicit rules regarding renal function and avoidance of certain co-administered drugs, delineating the exact parameters under which the medicine is officially intended to be used.

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Recent Clinical Evidence

Research on Урофосцин (Fosfomycin) is primarily based on Randomized Controlled Trials (RCTs) and meta-analyses that have compared its use for acute uncomplicated cystitis against other oral antibiotics. These short-term studies examined key outcomes such as clinical resolution (reduction of painful urination and frequency) and microbiological eradication (clearance of the infecting bacteria). Studies monitored how symptoms evolved in the observed populations, and data show patterns related to therapeutic success comparable to those observed with comparative regimens.

The medicine was also studied for its use as prophylaxis (prevention) before certain transurethral surgical procedures, such as prostate biopsies. Controlled trials tracked the incidence of post-procedure infections and fever in adult patients. Additionally, specialized research has explored its role against multidrug-resistant (MDR) bacteria in the urinary tract, focusing on microbiological eradication of highly resistant strains in observational settings.

A key limitation across the evidence base is the follow-up duration: long-term effects are not fully established beyond the initial one-month assessment for acute cystitis. Evidence is heterogeneous for prophylactic use, and certainty remains low for MDR infections due to a lack of large, prospective, randomized trials. Research for special populations, including pregnant women with asymptomatic bacteriuria and older adults with comorbidities, is also available, providing context but not individual predictions. The overall evidence quality varies across these different study contexts.

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Frequently Asked Questions (FAQ)

Common questions about Урофосцин (FAQ)

Q: What types of bacteria is Урофосцин designed to target?

Regulatory documents state that Урофосцин (Fosfomycin) is indicated for infections caused by susceptible pathogens. The organisms most commonly targeted include bacteria like Escherichia coli (E. coli) and Enterococcus faecalis, which are frequent causes of urinary tract infections.

Q: Does Урофосцин belong to the same class of antibiotics as amoxicillin?

The official product information indicates that Fosfomycin is classified as a phosphonic acid derivative, a unique class of antibiotic. This mechanism of action differs completely from that of major antibiotic classes like penicillins (such as amoxicillin), and it has no known cross-resistance with them.

Q: What do studies say about the time it takes for symptoms to begin improving after taking Урофосцин?

Studies and official information indicate that patients generally begin to feel some improvement in their symptoms within two to three days after taking the single dose. Regulatory guidance may reference consulting a healthcare professional if symptom improvement is not observed within that timeframe.

Q: Why is Урофосцин often administered as a one-time treatment?

The use of a single-dose regimen is supported by the medicine’s unique properties. Official pharmacokinetic data shows that high concentrations of the active ingredient remain sustained in the urine for approximately 30 to 48 hours. This concentration is consistent with the drug’s use as a single-dose treatment for the approved indication.

Q: Is the active ingredient in Урофосцин available under any generic names?

Yes, the active ingredient in the medicine is Fosfomycin, which is the recognized generic name for the drug substance. Урофосцин is a brand name for a specific formulation of the drug.

Q: Are there different salt forms of the active ingredient in Урофосцин?

The active ingredient, Fosfomycin, has been available in various salt forms for different administration methods. For the oral solution, it is typically used as Fosfomycin tromethamine. In some regions, a different salt form, such as Fosfomycin disodium, may be used for intravenous administration.

Q: What does the term 'uncomplicated' mean when describing the UTIs treated by Урофосцин?

The term "uncomplicated" is used in regulatory texts to define the specific type of infection the drug is approved for. It generally refers to an acute bladder infection, or cystitis, in non-pregnant, otherwise healthy women who have a structurally normal urinary tract.

Q: Is it necessary to finish the entire prescribed treatment of Урофосцин, even if symptoms improve quickly?

Although this medicine is a single-dose treatment, official information describes that the entire content of the sachet should be consumed as prescribed at the time of administration. This adherence to the protocol is intended to support treatment effectiveness and prevent the growth of antibiotic-resistant bacteria.

Q: What is the high-level difference between Урофосцин and nitrofurantoin?

Regulatory documents acknowledge that Урофосцин (Fosfomycin) and nitrofurantoin differ in chemical structure, mechanism, and dosing. Fosfomycin is generally described as a single-dose treatment with bactericidal properties, while nitrofurantoin belongs to a different drug class and typically requires multiple doses taken over several days.

Q: How quickly does Урофосцин typically begin to act in the body, according to research?

Studies and official patient information indicate that the medicine begins to exert its action against susceptible bacteria within the first few hours after administration. It is noted that while the bacteria are being affected quickly, the physical irritation and associated symptoms in the bladder may continue for a short period.

Q: What is the expected duration of the drug's activity after a single dose of Урофосцин?

Official regulatory documents confirm that the medicine is designed to achieve concentrations in the urine that are sustained at appropriate levels for an extended period. Following a single dose, these concentrations are maintained for approximately 30 to 48 hours.

Q: Are there special considerations for using Урофосцин in patients who have liver impairment?

The medicine is primarily eliminated by the kidneys. While liver impairment is not listed as a formal contraindication, the official information recommends that patients with a history of liver disease consult a healthcare professional before use.

Q: What should a patient generally know if they accidentally take more than the prescribed amount of Урофосцин?

Official information recommends contacting a healthcare professional or Poison Control Centre in the event of a suspected overdose. This guidance applies even if there are no noticeable symptoms or signs of distress.

Q: How long after taking Урофосцин are official documents generally silent on side effects?

While general long-term effects are not fully established, safety information notes that certain rare but serious side effects can occur well after the treatment is complete. Specifically, severe diarrhea due to bowel inflammation may occur up to two months or more after the final dose of the antibiotic.

Q: Are there descriptive differences between the uses of oral versus intravenous forms of Урофосцин?

Official prescribing information confirms that the uses for different forms of Fosfomycin vary by administration method. The oral form is typically approved for acute uncomplicated urinary tract infections, while the intravenous form has been studied and used in some regions for complicated UTIs and other systemic or serious infections.

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How should Урофосцин be stored and disposed of?

How to Store and Dispose of Урофосцин (Fosfomycin)

The storage and disposal instructions for Урофосцин (Fosfomycin trometamol granules) are defined by regulatory labeling to ensure product stability.

Detail Official Regulatory Requirement
Storage Temperature Store at room temperature, specifically between 20°C and 25°C (68°F and 77°F).
Environmental Protection Keep the medicine away from direct light, moisture, and excess heat. It must not be frozen.
Packaging Rules Keep the granules in the original container, tightly closed, and do not use after the labeled expiry date.
Stability After Preparation The contents must be dissolved in water and swallowed immediately; the solution must not be stored for later use.
Child Protection The medicine must be stored out of the sight and reach of children.
Disposal Instructions Unused or expired product should not be thrown into household waste or wastewater. Consult a pharmacist or follow local regulations for proper disposal.

These conditions ensure the granules remain chemically stable before use and outline necessary steps for environmentally safe disposal.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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