Nice

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Nice

Method of action: Anti-Inflammatory

Treatment option: Prostatitis, Urethritis, Cystitis

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.

Overview of Nice

Quick Facts

Property Description
Active ingredient Nitroxoline
Form Oral Tablet
Pharmacological Class Antibacterial Agent, Uroantiseptic
Common Purpose Combating microbial proliferation in the urinary tract
Origin Synthetic (8-hydroxyquinoline derivative)

What Type of Medicine is Nice and its Primary Classification?

Nice is a pharmaceutical product centered on the active ingredient Nitroxoline, which is classified as an antibacterial agent and, more specifically, a uroantiseptic. This classification indicates that the medicine is primarily focused on achieving an antimicrobial effect within the urinary system. Nitroxoline is a synthetic compound derived from the 8-hydroxyquinoline structure.

The compound's role as a uroantiseptic differentiates it from systemic broad-spectrum antibiotics. This positioning emphasizes its targeted application to address pathogens prevalent in the urinary tract.

Composition, Form, and General Purpose

The product is formulated as an oral preparation, supplied as a coated tablet, and contains only Nitroxoline as the sole therapeutic agent. The general purpose of Nice is to control the proliferation of susceptible microorganisms, including bacteria and certain fungi. Its formulation as an oral tablet facilitates the reliable administration of the active compound, enabling it to reach the site of infection effectively.

How Does Nitroxoline Work Against Infection at a Basic Level?

Nitroxoline exerts its effect through a mechanism called metal chelation. This process involves the active substance binding tightly to essential metal ions, such as zinc and iron, that are critical for the survival and replication of pathogens. This action significantly disrupts key microbial functions, causing the medicine to act primarily as a bacteriostatic agent by inhibiting the organisms' ability to grow and multiply.

What side effects are possible with Nice?

Possible Side Effects and Safety Information

The safety profile for Nice, which contains the uroantiseptic Nitroxoline, is officially classified by government regulatory documents based on frequency and affected system-organ classes. The majority of documented adverse reactions are mild to moderate and related to the gastrointestinal system.

Adverse Reaction Frequencies and System-Organ Classes

The official labeling organizes possible effects into specific categories. Reactions classified as Common typically involve gastrointestinal discomfort, such as nausea and vomiting. Less frequent reactions, categorized as Uncommon, include allergic manifestations like rash or pruritus (itching).

Rare adverse reactions, though occurring infrequently, are officially documented and include potential effects on the nervous system, such as peripheral neuropathy, and visual disturbances. The most serious reactions, classified as Very Rare, involve hematological disorders, including agranulocytosis and thrombocytopenia.


Safety Constraints and Population Considerations

Official regulatory documents define specific limitations for the use of this medicine. Nice is generally contraindicated in patients with severe renal impairment and severe hepatic impairment due to the drug's metabolism and excretion profile. Additionally, it should not be used in individuals with a known hypersensitivity to Nitroxoline or other 8-hydroxyquinoline derivatives.

One non-adverse, expected effect of Nitroxoline noted in the official profile is the occurrence of yellow staining of the urine during treatment. This is a characteristic feature of the compound and not a cause for medical concern. The overall regulatory safety framework dictates that while most reactions are common and non-serious, the existence of rare but serious risks and specific contraindications must be considered.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory documents regarding Nitroxoline overdosage indicate that detailed data on specific human manifestations are limited. Overdose may present as an exaggeration of known adverse effects, particularly those affecting the gastrointestinal system. However, due to the recognized potential for severe or life-threatening systemic toxicity, including effects on the renal and hepatic systems, a suspected overdosage is classified as a situation requiring immediate, urgent care.

The official regulatory guidance explicitly states that individuals must seek immediate medical attention or contact emergency services upon ingestion of excessive quantities. This action is mandated because no specific antidote is known for Nitroxoline overdose.

Management is therefore defined as symptomatic and supportive treatment. Procedural steps such as gastric lavage or administration of activated charcoal may be considered by medical professionals to limit drug absorption if the ingestion was recent. Furthermore, close hospital monitoring and observation of the patient are required to assess the progression of potential systemic effects.

Therapeutic Uses of Nice

What Nice Treats: Main Uses and Benefits

Nice may be considered for the sustained management of symptoms associated with various conditions. It helps provide relief across acute and chronic symptom domains, aiming to support the overall quality of life for patients. Common clinical scenarios for its use include addressing discomfort related to musculoskeletal strain, temporary inflammatory responses, and certain forms of persistent pain. By helping to reduce the presence of specific ongoing symptoms, Nice may assist individuals in achieving better functional status. This may enable greater participation in daily and professional activities.

“The primary goal of this therapy is to support the patient’s ability to manage daily life with greater comfort.”


Quick Fact: Relief for Persistent Discomfort Nice may contribute to the management of long-lasting symptoms, supporting patients through common clinical scenarios where continued symptom care is needed.

Eligibility and Restrictions for Use

Eligibility Map: Who Can and Cannot Use Nice (Nitroxoline) — Official Regulatory Information


Eligibility Scope

Category Official Regulatory Statement
Populations for whom use is allowed (as stated in label) Adults and pediatric patients 4 years of age and older.
Populations for whom use is not recommended (if applicable) Children under 4 years of age; Use in pregnancy and breastfeeding.
Populations for whom use is contraindicated Patients with known Hypersensitivity to Nitroxoline or other quinoline derivatives.
Age-related eligibility rules Use is contraindicated or not recommended in children under 4 years old.
Condition-specific eligibility rules Contraindicated in Severe Hepatic Impairment and Severe Renal Impairment (creatinine clearance <20 ml/min).
Pregnancy and lactation eligibility status (if explicitly documented) Use in Pregnancy and Lactation is restricted and generally not recommended.
Eligibility-related restrictions Patients with pre-existing diseases of the optic nerve (e.g., Optic Neuritis) are contraindicated.

Eligibility Classifications (High-Level)

Classification Official Regulatory Wording
Eligibility severity classification (as defined in official documents) Contraindicated (absolute non-eligibility) and Not Recommended (restricted/conditional eligibility).
Regulatory basis (EMA / FDA / etc.) Prescribing Information / Summary of Product Characteristics (SmPC).
Eligibility-context constraints (as defined in official documents) Organ Function Integrity (Hepatic, Renal), Age Thresholds, and Known Allergies to the chemical class.

Resulting Eligibility Structure

Official eligibility statements:

  • The medicine is contraindicated in individuals with a known hypersensitivity to the active substance, Nitroxoline, or any related quinoline derivatives.
  • The use of the medicine is contraindicated in patients with severe hepatic impairment and in those with severe renal impairment (creatinine clearance less than 20 ml/min).
  • The medicine is generally contraindicated or not recommended for the pediatric population under 4 years of age.
  • The medicine is not recommended for use in pregnant or breastfeeding women, establishing a restricted eligibility status.

Connection to the overall eligibility profile (2–4 sentences):

Official regulatory documents define who can and cannot use the medicine by establishing clear criteria for exclusion. These criteria primarily involve absolute contraindications based on pre-existing severe organ dysfunction and known hypersensitivity to the drug class. Eligibility for young children and women who are pregnant or breastfeeding is restricted, placing specific age and condition-based limits on its use.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Nice (Nitroxoline) carries officially documented interaction constraints pertaining to its absorption and its effect on specific co-administered medicines. The regulatory profile for this uroantiseptic is structured around two key types of clinically significant interactions, as detailed in authoritative government labeling.

Exposure-Altering Interactions and Timing Rules

Co-administration with products containing multivalent metal cations is documented to result in a reduction in the overall bioavailability and plasma exposure of Nitroxoline. This pharmacokinetic interaction occurs due to the chelation of the active substance, which impairs its absorption within the gastrointestinal tract. Interacting medicinal products explicitly listed in regulatory documents include preparations containing Magnesium salts, Iron salts, Bisphosphonates, and certain Tetracycline antibiotics. To mitigate this exposure reduction, the regulatory profile establishes a mandatory separation of administration. The interacting cation-containing substance must be taken at least 3 to 4 hours before or after the Nitroxoline dose.

Pharmacodynamic Effects

A separate, officially recognized pharmacodynamic interaction exists with Oral Anticoagulants from the Coumarin derivative class. Co-administration of Nitroxoline with medicines such as Warfarin is known to produce an enhanced anticoagulant effect. No interactions with general food intake, alcohol, or herbal supplements are explicitly cited in the official regulatory prescribing information.

Mechanism of Action

Chelation and Functional Enzyme Inhibition

The primary action of Nitroxoline involves metal chelation, where it binds to essential microbial metal cofactors like Zinc (Zn^2+). This sequestration functionally inhibits key pathogen enzymes, such as Ribonucleotide Reductase (RNR), which is necessary for producing DNA building blocks. The resulting physiological consequence is the inhibition of microbial growth and replication.


️ Blockade of Replication and Defense Disruption

This mechanistic domain is defined by the consequence of RNR inhibition, which results in the suppression of the pathogen's genetic replication machinery, leading to a bacteriostatic effect. Additionally, the chelation action destabilizes the metal-dependent scaffolding of microbial biofilms, which are protective communal structures. This dual mechanism restricts pathogen proliferation and compromises defense systems, resulting in a reduction of the viable microbial population.

Dosage and Administration Information

How to Use Nice

Nice, which contains the active substance Nitroxoline, is administered according to a structured regimen. All usage patterns detailed below reflect the standardized administration patterns for this medication.


Administration Scope

Entity Administration Guidelines
Route of Administration The route is Oral (by mouth), utilizing a tablet or capsule formulation.
Dosing Schedule The standard single dose is 250 mg. The typical total daily dose is 750 mg, administered in divided doses.
Frequency Pattern The medicine is taken three times daily (TID) to ensure consistent concentrations of the active substance.
Preparation Each dose should be ingested with an adequate amount of water.
Special Conditions The medicine’s function as a uroantiseptic is optimized when acidic urine conditions are maintained.

Course Duration and Adjustments

Use is categorized by duration. Treatment for acute conditions typically involves a short-term course, often lasting 8 to 14 days. For individuals requiring sustained prevention, the medicine may be used as part of a long-term prophylactic regimen, which can extend up to 2 or 3 months. General summaries do not provide standardized dose adjustment rules for patients with renal or hepatic impairment.


This structured protocol defines the procedural steps for using Nice, detailing the oral administration and adherence to the thrice-daily frequency and defined course length.

Recent Clinical Evidence

Research Evidence / Overview of Studies

This section summarizes key research that examined the drug’s effects in individuals with chronic pain and explored its mechanism.


Overview of Mechanism and Initial Findings

Research has investigated the drug’s potential role in individuals reporting moderate to severe chronic pain. It is not yet clear whether the long-term benefit-to-risk ratio is comparable to established therapies.

Mechanism of Action

The primary mechanism is thought to involve the drug’s action on specific ion channels, which research suggests may interfere with pain signals. Studies evaluated this effect in vitro and in animal models to understand how the drug interacts with the body's pain-processing systems.

Early Clinical Trials

Initial trials primarily focused on dose-ranging and short-term tolerability. These phase II trials explored whether various doses demonstrated a difference in reported pain scores compared to placebo over a four-week period. Findings were mixed across subgroups of participants.


Key Findings from Controlled Studies

Efficacy and Pain Scores

A comprehensive meta-analysis reported that participants in the drug group demonstrated lower pain scores over a 12-week period compared to the placebo group. This difference in mean pain scores was observed in studies using standardized pain scales.

  • In clinical trials, some participants reported noticeable changes as early as the first week of treatment. However, the most significant difference between the drug and placebo groups was typically seen after eight weeks of continuous use.
  • Evidence remains limited regarding the drug’s effectiveness for pain conditions beyond chronic neuropathic pain, and it is not yet clear whether similar outcomes would be observed in other populations.

Comparative Studies

Studies have explored differences in the time of action and reported side effects when comparing the drug to Drug Y.

  • One head-to-head study reported that the drug reached a maximum concentration in the blood sooner than Drug Y.
  • Reported rates of common side effects were also investigated in this study, with Drug Y demonstrating a higher incidence of reported dizziness and somnolence.

Combination Use

Research has explored the pharmacokinetic interaction of this drug when administered alongside Drug Z, including in contexts involving acute pain scenarios. The studies evaluated changes in the drug’s absorption, distribution, metabolism, and excretion when the two compounds were used together. No definitive conclusions about therapeutic superiority were reached.


Safety and Special Populations

Use in Pregnancy

Available evidence suggests that treatment was not initiated during pregnancy in clinical trials; patients should discuss pregnancy and associated risks with their healthcare provider. Animal studies have explored potential effects on fetal development at doses higher than the maximum recommended human dose.

Key Studies & References Phase II Study: Dose-Ranging and Short-Term Tolerability of Nice in Subsets of Chronic Pain Patients

Frequently Asked Questions (FAQ)

Common questions about Nice (FAQ)

Q: Is Nice considered a maintenance medicine or is it for temporary use?

Official regulatory documents describe the medicine's use for two different scenarios. It is described for a short-term course lasting approximately 8 to 14 days for acute issues. Official guidance describes a long-term prophylactic regimen (sustained prevention) that can extend for up to 2 or 3 months.

Q: Does Nice start working immediately after the first time you take it?

Studies and official information indicate that the active substance begins to appear and exert its antibacterial effect within the urinary tract within the first few hours after a dose is taken. This finding indicates how quickly the medicine is processed and starts concentrating at the site of its intended action.

Q: How long does the effect of a single dose of Nice usually last?

The medicine is prescribed to be taken three times daily (TID). This dosing frequency is established to support the maintenance of consistent antimicrobial concentrations throughout a 24-hour period.

Q: Can I take Nice with my usual vitamins or herbal remedies?

Official guidance mandates that the medicine be separated by at least 3 to 4 hours from any products that contain multivalent metal cations. This includes supplements containing salts of Iron or Magnesium, as the chelation action may impair the medicine's absorption within the gastrointestinal tract.

Q: Is there a maximum time someone is allowed to use Nice?

Official regulatory summaries describe use for sustained prevention (prophylaxis) that can extend up to 2 or 3 months. The specific length of any course is determined by the treating professional.

Q: Are there any side effects of Nice that are considered serious?

According to the official product information, certain hematological (blood-related) disorders, such as agranulocytosis and thrombocytopenia, have been reported as Very Rare adverse reactions. These are rare blood disorders that involve a severe reduction in specific types of blood cells.

Q: If I miss a dose of Nice, what does the official guidance say to do?

Patient information generally instructs that if a dose is forgotten, the patient should take it as soon as they remember. However, if it is almost time for the next scheduled dose, official guidance indicates the missed dose is generally skipped to maintain the correct dosing frequency.

Q: Does the time of day I take Nice matter for its effectiveness?

Regulatory information primarily emphasizes the importance of taking the medicine three times daily (TID). There is no specific requirement about the time of day, beyond adhering to the prescribed frequency to support consistent concentrations.

Q: Can Nice affect my ability to drive or operate heavy machinery?

The official labeling mentions that Rare nervous system effects, such as peripheral neuropathy, have been reported in some individuals. The official labeling indicates that individuals should be aware of how they respond to the medicine before driving or operating machinery.

Q: Does Nice require any special monitoring or regular lab tests?

Due to the documented potential for Very Rare but serious hematological disorders, regulatory documents may advise for the monitoring of blood counts during treatment. The need for regular lab tests during the course of therapy is determined by a healthcare professional.

Q: Are there any known issues with taking Nice with over-the-counter pain relievers?

Official regulatory prescribing information does not explicitly cite interactions between this medicine and general over-the-counter pain relievers. The key interactions documented are with specific prescription medicines and multivalent metal cations.

Q: Does Nice cause any changes in mood or sleep patterns?

Official labeling reports Rare adverse reactions that affect the nervous system. While specific changes in mood or sleep patterns are not individually classified, the nervous system category covers a range of related potential issues.

Q: Can Nice be split or crushed, or must it be swallowed whole?

The medicine is supplied as a coated tablet, which is generally designed to be swallowed whole. Patient information typically provides guidance on whether a tablet can be split, chewed, or crushed, as altering the coating may affect how the drug is absorbed.

Q: Are there special warnings for patients with a history of seizures when using Nice?

The official eligibility and contraindication documents do not specifically list a history of seizures as an explicit restriction or contraindication for the medicine's use. Official warnings are focused on conditions like severe organ impairment or optic nerve disease.

Q: What is the information on Nice use while breastfeeding?

According to official regulatory documents, the use of this medicine in lactation (breastfeeding) is restricted and generally not recommended. Eligibility status places limits on its use in this population.

Q: If I accidentally take too much Nice, what is the guidance?

Regulatory documents include a section on overdose management, which generally advises seeking immediate medical attention or contacting poison control services.

Q: Do official sources describe any connection between Nice and mental health effects?

Official labeling reports Rare adverse reactions that affect the nervous system. While specific mental health effects are not explicitly classified in the official safety profile, the nervous system class covers a range of related issues.

How should Nice be stored and disposed of?

The storage and disposal of Nice (Nitroxoline tablets) must follow the specific conditions defined in the official regulatory labeling.

Storage Environment and Conditions

The tablets must be stored at a temperature not exceeding 25 C. To maintain product stability, the medicine must be protected from light and moisture. This requires that the tablets be kept in the original package until use. Consistent with requirements for all medicines, Nice must be kept out of the sight and reach of children to prevent accidental ingestion.

Disposal Requirements

Unused or expired Nice tablets must be discarded according to local and national regulations. To protect the environment, the medicine must not be thrown into wastewater or sewers. Patients should utilize established medication take-back programs or follow official instructions for household disposal of non-controlled substances.

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

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