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Urofenicol NF

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Urofenicol NF

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Treatment option:

Medically reviewed

Marina Burgos

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 Urofenicol NF

Property Description
Active Ingredients Ciprofloxacin, Phenazopyridine
Form Oral Tablet (Fixed-Dose Combination)
Pharmacological Class Fluoroquinolone Antibiotic, Urinary Analgesic
General Purpose Simultaneous treatment of bacterial cause and symptomatic pain relief
Origin Synthetic Compound

Urofenicol NF is a specialized fixed-dose combination (FDC) prescription drug that is structured to provide a dual therapeutic action using two distinct synthetic compounds in an oral tablet form. This preparation is formally classified as both an Antibiotic and a Urinary Analgesic, reflecting its strategy to manage both the infection and the patient's discomfort concurrently. The FDC design is clinically recognized for its role in ensuring immediate and synchronized delivery of both therapeutic components.

The composition centers on the active ingredients: Ciprofloxacin and Phenazopyridine. Ciprofloxacin is the systemic component, belonging to the fluoroquinolone class. It is responsible for the bactericidal action against pathogens by interfering with their DNA replication machinery. Ciprofloxacin acts as a broad-spectrum antimicrobial agent.

The second component, Phenazopyridine, functions as a specialized urinary analgesic and a local anesthetic. This ingredient does not treat the infection itself; rather, it targets the symptoms. Phenazopyridine works by exerting a localized anesthetic effect directly on the mucosa of the urinary tract. This action means the medicine rapidly provides comfort by reducing the sensation of dysuria and urogenital pain. The overall general purpose of this combination therapy is therefore to initiate the necessary eradication of the bacterial infection while providing swift, effective symptomatic relief.

Regulatory References

  1. DailyMed: Phenazopyridine
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What side effects are possible with Urofenicol NF?

Possible Side Effects and Safety Information

The safety profile for Urofenicol NF (chloramphenicol) is documented in official government regulatory information, which outlines a number of serious and specific adverse reactions.

Serious and Clinically Significant Adverse Reactions

The most serious regulatory concern is the risk of Fatal Aplastic Anemia. This is an irreversible form of severe blood disorder, which is not dependent on the dosage or duration of treatment, and it is subject to a Boxed Warning on official labels. Other serious blood disorders include hypoplastic anemia, thrombocytopenia, and granulocytopenia.

A separate and more common concern is Dose-Related Bone Marrow Depression (suppression of red and white blood cell production). This effect is reversible upon discontinuation or reduction of the drug but requires mandatory and frequent blood studies (e.g., platelet and reticulocyte counts) to monitor.

Population-Specific and Long-Term Risks

Adverse Reaction Category Related Safety Note
Pediatric Toxicity "Gray Baby Syndrome": A severe, potentially fatal condition primarily affecting premature and newborn infants due to their underdeveloped ability to metabolize and excrete the medicine. This risk restricts its use in this population.
Long-Term Effects Potential Carcinogen: The drug is officially classified as an agent that is reasonably anticipated to be a human carcinogen, and it is associated with a risk of genetic toxicity.
Neurotoxicity Optic and Peripheral Neuritis: Inflammation of the optic and peripheral nerves, often linked to prolonged use, can lead to vision problems and a pins-and-needles sensation.

Other Documented Adverse Reactions

General adverse reactions that have been documented include gastrointestinal disturbances (e.g., nausea, vomiting, diarrhea), headache, fever, and hypersensitivity reactions such as rash, swelling (angioedema), and anaphylaxis. Due to the overall severity of its known risks, the use of this medicine is generally restricted by regulatory authorities to serious infections where less potentially toxic antibiotics are ineffective or contraindicated.

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Overdose and Emergency Response

Overdose and when to seek help

Overdose with this fixed-dose combination reflects the toxicological profiles of both active components, as documented in official regulatory labeling.

Documented Overdose Manifestations

Manifestations of Ciprofloxacin overdose may include central nervous system effects such as dizziness, confusion, tremor, or headache, potentially escalating to hallucinations or seizures (convulsions). Renal toxicity is also documented, presenting as crystalluria or reversible renal impairment. Overdosage of the Phenazopyridine component is formally associated with gastrointestinal disturbances and the risk of severe systemic complications.

Life-Threatening Outcomes

The most severe officially documented outcomes include methemoglobinemia (a blood disorder potentially leading to cyanosis), acute hepatic failure, and acute renal failure. The risk of acute organ failure is noted to be increased in patients with pre-existing renal or hepatic impairment.

Required Emergency Actions

All suspected overdose situations require the patient to seek immediate medical attention. Urgent medical services must be contacted immediately if symptoms involve life-threatening signs such as seizures, prolonged periods of severe confusion, or the visible onset of cyanosis. While no specific antidote is known for Ciprofloxacin, documented supportive care includes symptomatic treatment, maintaining adequate hydration to prevent crystalluria, and considering activated charcoal to reduce absorption. Close medical observation, including monitoring of hepatic and renal function, is mandated.

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Therapeutic Uses of Urofenicol NF

What Urofenicol NF Treats: Main Uses and Benefits

The primary role of Urofenicol NF is to offer supportive therapeutic benefit across specific clinical domains characterized by acute discomfort. The product's therapeutic area of use is commonly associated with contributing to easing the overall symptom load in acute presentations.

The condition of urinary tract infection involves symptoms related to inflammatory or irritative states. The medication may be part of symptomatic management applied across these domains. It is commonly used across conditions presenting with acute episodes marked by increased discomfort or tension, and relevant when symptoms create noticeable functional strain. The product is commonly used to help with managing these pronounced and challenging symptoms.

It is relevant that the medication is often applied during phases when symptoms intensify and supportive relief is needed. It helps to address symptom clusters that may become intense or disruptive, assisting with easing the overall symptom load and supporting general well-being during symptomatic phases.

Quick Fact: Support for Acute Discomfort The product is relevant in contexts involving heightened systemic burden and symptoms related to inflammatory or irritative states.

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Eligibility and Restrictions for Use

Eligibility Scope

The eligibility for Urofenicol NF is defined by strict regulatory criteria based on the contraindications of its two active components (Ciprofloxacin and Phenazopyridine).


Populations for whom use is Contraindicated

Use is absolutely prohibited for patients with:

  • Known hypersensitivity to Ciprofloxacin, Phenazopyridine, or any fluoroquinolone.
  • A history of tendon rupture related to previous fluoroquinolone use.
  • Diagnosed Myasthenia Gravis (MG).
  • Severe renal insufficiency or kidney failure (a primary restriction for the Phenazopyridine component).
  • Concomitant administration of Tizanidine.

Age and Physiological Restrictions

  • Pediatric Use: The medication is generally not recommended for children and adolescents (typically under 18 years) for common infections, due to potential risks to joints.
  • Pregnancy and Lactation: Use is generally not recommended or contraindicated during pregnancy and while breastfeeding.
  • Conditional Use: Restricted use and heightened caution are required in older adults, and in patients with hepatic impairment, certain cardiac conditions (e.g., QT prolongation), or a history of seizure disorders.
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What should I know about interactions with other medicines?

Urofenicol NF interactions are comprehensively documented, detailing effects that alter systemic exposure or increase specific pharmacodynamic risks. Tizanidine is formally contraindicated for co-administration. Significant restrictions exist for co-administration with Multivalent Cation-Containing Products (e.g., antacids, sucralfate, iron, and zinc). To prevent a decrease in absorption, the Ciprofloxacin component must be administered at least two hours before or six hours after these agents. The co-administration of dairy products or calcium-fortified juices alone should also be avoided due to the potential for reduced absorption.

This medication acts as an inhibitor of CYP1A2 metabolism, which can lead to elevated plasma concentrations of co-administered drugs metabolized by this enzyme, including Theophylline and Caffeine. Pharmacodynamic interactions include an additive risk of QT interval prolongation with other drugs that share this effect, and the potential for an enhanced anticoagulant effect with Warfarin. The risk of severe tendon disorders is further increased when Corticosteroids are co-administered, a concern highlighted particularly in the elderly population.

For the Phenazopyridine component, use is subject to a strict time limit: co-administration with an antibacterial agent should not exceed two days. Caution is also advised in individuals with G-6-PD deficiency due to documented susceptibility to hemolytic anemia.

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Mechanism of Action

Mechanism of Action: Inhibition of Bacterial DNA Integrity

This domain describes the primary, bactericidal action provided by Ciprofloxacin. The mechanism focuses on disabling the bacterial enzymes DNA Gyrase (Topoisomerase II) and Topoisomerase IV by stabilizing their bond to the DNA molecule. This molecular interference halts the pathogen's ability to replicate and repair its genetic material, triggering a cascade that results in bacterial cell death.


️ Mechanism of Action: Local Sensory Nerve Blockade

This domain details the rapid, localized effect of Phenazopyridine. Once excreted into the urine, the compound makes direct contact with the afferent sensory nerve endings embedded in the urothelial lining. This interaction locally alters the excitability of nerve membranes, resulting in the attenuation of afferent sensory signaling originating from the peripheral nervous system.


Coordination of Physiological Effects

The mechanism involves the simultaneous engagement of both domains, coordinating the bactericidal effect with local afferent signaling modulation. This dual action facilitates the systemic elimination of the bacterial population alongside the peripheral modulation of sensory impulse transmission.

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Dosage and Administration Information

Administration Guidelines for Urofenicol NF

Urofenicol NF is an oral tablet that is governed by specific procedural rules for administration, focusing on precise dosing, timing, and duration. The standard dosing schedule requires the tablet to be taken Twice Daily (BID), ideally separated by a 12-hour interval.

Procedural and Time Constraints

Instruction Category Protocol Specification
Route of administration Restricted to Oral administration only.
Timing in relation to meals Must be taken with or following a meal to help reduce potential gastrointestinal upset.
Preparation requirements The tablet must be swallowed whole with a full glass of water and must not be crushed, cut, or chewed.
Course duration limit Use of the fixed-dose combination (FDC) is limited to a maximum duration of two days (48 hours).

If continued antibacterial treatment is required after the initial 48 hours, the regimen must transition to a Ciprofloxacin-only formulation. This procedural step maintains the use of the analgesic component for only the short duration of acute discomfort. For adult patients with impaired renal function (Creatinine Clearance <30 mL/min), a dose adjustment for the Ciprofloxacin component is required, typically reducing the frequency or amount to prevent accumulation. If a dose is missed, it should be skipped if the next scheduled dose is near, and a double dose must not be taken.

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Recent Clinical Evidence

Research Evidence / Overview of Studies


Summary of Clinical Findings

Clinical trials results have explored whether Urofenicol NF was associated with patient outcomes by evaluating effects on pain symptoms from moderate pain. Studies evaluated findings related to inflammatory markers. These trials examined results across diverse adult patient groups.

Core Efficacy Studies (RCTs)

Research examined that a 10 mg/day dose reported a change in pain intensity averaging 30% in the studied population. The protocol for this study described the daily regimen used for the evaluated results. The tolerability and adverse event data in the studied adults was evaluated, but the research protocol defined the study population, which did not include those with a history of liver issues. Furthermore, research examined mobility outcomes for the combination therapy compared to placebo, with an effect that was compared to older treatments in a separate analysis.


Safety and Tolerability

The reporting on gastrointestinal side effects suggested a lower incidence in the studied group compared to placebo. The research indicated the studies investigated Urofenicol NF as an option for chronic conditions.

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Frequently Asked Questions (FAQ)

Common questions about Urofenicol NF (FAQ)

Q: Is Urofenicol NF an antibiotic?

Urofenicol NF is classified as an antibacterial medication. It belongs to the nitrofuran class of antibiotics.

Q: How quickly does Urofenicol NF typically work?

Official product information does not specify a precise time frame until the effects are typically felt. It is important to continue taking the medication as prescribed for the full duration recommended by a healthcare provider to effectively treat the condition.

Q: Can Urofenicol NF be taken with food?

Taking Urofenicol NF with food or milk may help reduce the chance of experiencing stomach upset. Always follow the specific instructions provided by your healthcare professional regarding administration.

Q: What should I do if I miss a dose?

If a dose is missed, it should generally be taken as soon as remembered, unless it is nearly time for the next scheduled dose. It is important not to take two doses to try and make up for a missed one. For personalized guidance on managing missed doses, consult a healthcare provider.

Q: Is Urofenicol NF safe to use during pregnancy?

Label information suggests that Urofenicol NF may not be recommended during pregnancy, particularly near or at term, due to potential risks documented in regulatory materials. It is essential to discuss your specific circumstances, including pregnancy status and plans, with a healthcare provider before starting or continuing this medication.

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How should Urofenicol NF be stored and disposed of?

Official Storage and Disposal Profile

Storage Conditions and Integrity

Urofenicol NF must be stored according to the specific conditions detailed on its product label. If no specific label instructions are available, the medicine must be kept at controlled room temperature (20 C to 25 C). The product must be protected from both moisture and excessive heat or freezing. The container must be selected to maintain the drug's safety and quality, and storage areas must be clean and secured from unauthorized access.

Disposal and Safety Rules

To dispose of unused or expired Urofenicol NF, prioritize use of an official drug take-back program. If a take-back option is not available, most medicines should be mixed with an unappealing substance, sealed in a bag, and disposed of in household trash. Most oral prescription drugs require child-resistant packaging, and all medicines must be kept out of the reach of children to prevent accidental ingestion.

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

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