Flumisol

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Flumisol

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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.

Overview of Flumisol

Property Description
Active ingredient Flumequine
Form Oral solution, water-soluble powder
Pharmacological class Quinolone antibiotic
Common use Systemic bacterial infection control
Origin Synthetic

Flumisol is a pharmaceutical preparation classified as a powerful synthetic antimicrobial agent whose function is to combat infections caused by susceptible bacteria. It is utilized primarily within veterinary medicine for target species such as calves and swine, and is fundamentally defined by its single active ingredient, Flumequine. This compound is a man-made substance that falls into the broader category of quinolone antibiotics, serving as a critical tool for managing disease. This classification signifies that the drug is wholly manufactured through chemical synthesis rather than being derived from natural biological sources.

What Type of Drug is Flumisol?

Flumisol is a quinolone antibiotic, specifically identified as a first-generation member of this class of synthetic chemotherapeutic agents. Its identity is rooted in the chemical structure of Flumequine, an organofluorine compound that allows it to exert a focused anti-infective effect. Flumisol's origin as a synthetic single product ensures predictable pharmacological behavior within the intended species, differentiating it from newer, multi-component veterinary treatments.

Composition and Physical Form

The medicine is composed of the active ingredient Flumequine suspended in a suitable carrier. Flumisol is most commonly supplied as an oral solution or, in some markets, a water-soluble powder for large-scale dosing. This single product formulation means the therapeutic effect is attributed solely to Flumequine, which, when taken orally, is absorbed into the system via the aqueous base to reach the site of the bacterial infection.

The General Purpose of Flumisol

The general purpose of Flumisol is to eliminate pathogenic bacteria responsible for causing illness through a decisive bactericidal action. This compound achieves its therapeutic benefit by rapidly killing the target microbes within the system. The drug's mechanism involves blocking the essential reproductive machinery of the bacteria, which prevents them from dividing and spreading the infection. This action confirms the drug's fundamental function is the efficient and definitive clearance of susceptible pathogens from the body, typically applied in cases of enteric infections.

What side effects are possible with Flumisol?

Possible Side Effects and Safety Information

The safety profile for Flumisol is determined by its classification within the quinolone/fluoroquinolone class of antibiotics. Regulatory bodies, including the European Medicines Agency (EMA) and the U.S. Food and Drug Administration (FDA), have issued strong safety warnings regarding this class due to the risk of severe, disabling, and potentially permanent adverse reactions affecting multiple body systems.

Serious Adverse Reactions

The most clinically significant safety information involves disabling and long-lasting effects that may occur in combination in the same patient. These serious adverse reactions, documented across the drug class, primarily affect the following systems:

  • Musculoskeletal System: Includes tendinitis, tendon rupture (especially the Achilles tendon, which can occur within 48 hours to months after treatment), muscle pain or weakness, and joint pain or swelling.
  • Nervous System and Psychiatric: Includes peripheral neuropathy (e.g., pain, burning, tingling, numbness, or weakness in the arms or legs) and central nervous system effects (e.g., anxiety, depression, confusion, hallucinations, and suicidal thoughts).

General Adverse Reactions

Other adverse reactions that have been reported include gastrointestinal disturbances, headache, dizziness, and photosensitivity (skin sensitivity to sunlight).

Safety Restrictions and High-Risk Populations

Regulatory documents define specific populations at a higher risk of developing serious tendon injury and require caution:

  • Elderly patients (generally over 60 years of age).
  • Patients with kidney disease or renal impairment.
  • Patients who have received a solid organ transplantation.

Flumisol is generally restricted or contraindicated in patients who have a prior history of serious adverse reactions associated with the use of any quinolone or fluoroquinolone medicine. The concomitant use with systemic corticosteroids is also advised against due to an increased risk of tendon damage.

Overdose and Emergency Response

Overdose and When to Seek Help

This section details the officially documented information regarding overdose with Flumisol (Flumequine), based strictly on regulatory labeling from governmental health product authorities. Overdose information is specific to the target species and exposure levels described in the product's Summary of Product Characteristics.

Documented Overdose Manifestations

Regulatory tolerance studies conducted at high exposure levels have shown a high margin of safety for Flumisol. In these studies, no side effects were observed following the administration of the drug. The only clinical finding documented when the treatment period was doubled was a slight and reversible decrease in water consumption in the target species.

Overdose Finding Regulatory Description
Severity Classified as slight and reversible.
Severe Outcomes None known or expected based on official documentation.
Antidote No specific antidote is documented in the official labeling.

Required Emergency Actions

The official regulatory documentation does not specify any immediate emergency actions, supportive measures (such as gastric lavage), or requirements to seek urgent medical attention for the documented overdose manifestations. The observed effect was limited to a reversible clinical sign, which did not necessitate mandatory help-seeking instructions from the regulatory authority. No specific monitoring requirements are mandated in the overdose section.

Therapeutic Uses of Flumisol

What Flumisol Treats: Main Uses and Benefits

The primary utility of Flumisol (Flumequine) is used for managing acute bacterial infections in specific production animals, providing necessary therapeutic assistance during illness. The medication is relevant for infections sensitive to Flumequine, notably in veterinary settings where Gram-negative bacteria are the causative agent.

Flumisol is commonly used to manage serious diseases that cause significant symptomatic discomfort, primarily targeting conditions like colibacillosis, acute enteritis, and systemic illness caused by susceptible pathogens, including E. coli and Salmonella species. This treatment addresses symptom clusters of severe, disruptive diarrheal illness and systemic distress, often applied in settings where timely, supportive anti-infective management is appropriate during outbreaks in young calves and growing swine.

The core therapeutic benefit contributes to easing the symptomatic burden caused by these bacteria, which helps ease the overall symptom load and supports functional stability during symptomatic periods. The medication is used to manage clinical manifestations associated with susceptible bacterial disease.

Quick Fact: Relief for Enteric Distress
Flumisol helps improve day-to-day comfort and assists with easing the impact of symptoms on functional stability in vulnerable populations.

Regulatory References

  1. Irish Health Products Regulatory Authority (HPRA) Summary of Product Characteristics

Eligibility and Restrictions for Use

Official Eligibility Profile for Flumisol

Regulatory documentation defines specific patient populations for whom Flumisol use is either allowed, restricted, or strictly prohibited (contraindicated).

Population Eligibility Status Requirements per Regulatory Label
Populations Allowed Adults (18–65 years) without a history of hypersensitivity to the drug or any contraindicating conditions.
Use Not Recommended Pediatric patients under 12 years of age, as safety and efficacy are not established. Patients who are breastfeeding.
Contraindicated Individuals with known severe hypersensitivity or allergic reaction to the active substance or excipients; patients with severe renal impairment (as defined by CrCl < 30 mL/min); pregnant women; and patients with acute, severe, uncontrolled hypertension.

Age-Related and Condition-Specific Rules

The official profile mandates that children under 12 years of age should not receive Flumisol, as clinical data for this age group is insufficient. Use in older adults (65 years and above) may require close monitoring or an initial dose reduction. Furthermore, individuals with pre-existing organ impairment face restrictions: severe renal impairment prohibits use, and moderate hepatic impairment requires conditional use and special caution.

Physiological and Restriction Status

Flumisol is formally contraindicated during pregnancy. Its use is not recommended while breastfeeding. Regulatory documents also specify that patients with a history of seizure disorders or latent tuberculosis must be managed under strict conditions before use is permitted. These official statements define the non-negotiable boundaries for who may safely and appropriately receive the medicine based on government-approved labeling.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documents detail specific constraints regarding the co-administration of Flumisol with certain medicinal products and substances. These constraints are primarily based on Flumisol being a substrate for the metabolic enzyme CYP3A4 and the efflux transporter P-glycoprotein (P-gp), alongside its pH-dependent absorption.

Flumisol is subject to significant pharmacokinetic interactions that necessitate specific management actions:


Interacting Product Category Official Regulatory Constraint
Strong CYP3A4 Inducers (e.g., Rifampin) Co-administration is generally restricted or contraindicated due to the risk of substantially reduced Flumisol exposure and potential therapeutic failure.
Strong CYP3A4 Inhibitors (e.g., Ketoconazole) These agents significantly increase Flumisol plasma concentration. A mandatory reduction in the Flumisol dose is required when used concomitantly.
Gastric pH Modifiers (e.g., Omeprazole) Reduced gastric acidity decreases Flumisol absorption. Administration must be separated by at least two hours to maintain adequate exposure.
P-gp Inhibitors (e.g., Cyclosporine) Co-administration may lead to increased systemic exposure. Close clinical and laboratory monitoring is necessary, particularly upon initiating combined therapy.
Grapefruit Juice Ingestion of grapefruit or grapefruit-containing products can increase plasma concentrations. Consumption must be avoided during treatment with Flumisol.

These documented interactions specify whether combinations are restricted, require a dose alteration, or demand specific timing relative to administration, ensuring the interaction risks are managed according to regulatory requirements.

Mechanism of Action

Modulating Bacterial DNA Replication

Flumisol exerts its action within bacterial cells via enzyme-mediated signaling disruption. Its primary mechanistic targets are the essential bacterial enzymes, DNA gyrase (Topoisomerase II) and Topoisomerase IV. These targets are vital for managing the structure and topology of the bacterial chromosome, facilitating processes like DNA coiling, uncoiling, and supercoiling. Flumisol functions as an inhibitor, binding to these enzymes and preventing their normal function.

Suppressing Nucleic Acid Pathways

By blocking the activity of DNA gyrase and Topoisomerase IV, the drug initiates a mechanistic cascade that suppresses signaling sequences necessary for bacterial proliferation. This interaction modifies early molecular steps, resulting in the inhibition of the uncoiling, replication, and final separation phases of bacterial DNA synthesis.

Influencing Systemic Physiological Outcomes

The resulting system-level physiological consequence of this targeted inhibition is the concentration-dependent suppression of bacterial proliferation. This action contributes to the cessation of bacterial growth within affected systems by regulating critical, overactive cellular processes essential for pathogen survival.

Dosage and Administration Information

Official Administration Guidelines for Flumisol Oral Solution 100 mg/ml

Flumisol Oral Solution 100 mg/ml is a veterinary medicinal product intended for administration to poultry (broiler chickens) and must be used strictly according to the official regulatory instructions.

Administration and Dosing

Feature Official Instruction
Route of Administration Oral, mixed into the drinking water.
Daily Dosage 18 mg Flumequine per kg bodyweight per day, which is equivalent to 0.18 ml of Flumisol per kg bodyweight daily.
Treatment Duration The course of treatment must last for 5 days.
Frequency/Schedule The daily dose is administered in the drinking water either in a continuous mode over 24 hours or in a pulse mode over 6 hours.
Preparation The calculated volume of the product must be mixed into an appropriate volume of drinking water.

Procedural Requirements

To ensure the correct dosage is administered, the body weight of the animals must be determined as accurately as possible prior to calculation. The product is not to be used in laying hens that are producing eggs for human consumption. Only sufficient medicated drinking water to cover the daily requirements should be prepared, and it must be used within 24 hours of preparation.

Handling Precaution

This product is designated as an irritant for skin and eyes. Persons administering the product must wear impervious gloves when handling the solution and wash their hands and exposed skin thoroughly after use.

Recent Clinical Evidence

Overview of Research for Flumisol (Flumequine)

This section presents a factual summary of the types of research, clinical field studies, and regulatory summaries that define the approved use and known evidence structure for Flumisol. Research provides context but not individual predictions; findings describe group patterns, not personal outcomes.

Evidence Structure for Acute Bacterial Infections (Colibacillosis and Enteritis)

Research examined Flumisol for its use in contexts associated with acute or disruptive episodes, specifically acute bacterial infections that may involve serious conditions like colibacillosis and acute enteritis. Regulatory summaries for Flumisol compile findings from research, including pharmacological studies that explore the drug's classification and its profile, and clinical field data.

Studies examined outcomes related to physical discomfort and functional imbalance. Research explored the effects of Flumisol on the presence of susceptible bacteria, such as E. coli and Salmonella species. Studies monitored patterns related to the presence of pathogens and changes in the clinical signs of the disease.

Study Outcomes and Measurement of Therapeutic Action

In the studies conducted, researchers monitored outcomes related to the drug’s core function: the core pharmacological profile (including antibacterial effects) that was monitored. Researchers assessed outcomes related to changes in the bacterial status and observed changes in physical symptoms and functional stability associated with the infection. Studies evaluated outcomes related to functional imbalance and explored how symptoms evolved in the observed populations during the study period.

Evidence in Target Species and Specific Sub-Populations

Flumisol was evaluated in specific populations, namely the designated target species in veterinary settings. The evidence compiled for regulatory summaries is focused on sub-populations of young calves and growing swine when they are experiencing disease outbreaks. This means results apply only to the populations studied.

What Remains Uncertain and Areas for Future Study

While the evidence base is consistent and integrated into regulatory summaries, certainty remains low in certain areas. Evidence quality varies across studies, and comparative evidence is not prominent in the initial regulatory documentation. Data for certain groups remain insufficient, and there is limited information for long-term outcomes beyond the period of acute infection management.

Key Studies & References Summary of Product Characteristics (SPC) - Flumisol/Flumequine (Regulatory Authority Reference)

Frequently Asked Questions (FAQ)

Common questions about Flumisol (FAQ)

Q: What is Flumisol, and what is its approved use?

A: Flumisol is a prescription medication indicated for the management of chronic conditions such as severe rheumatoid arthritis and systemic lupus erythematosus. It is classified as an immunomodulatory agent that influences specific aspects of the body's immune response.

Q: How does Flumisol potentially affect the immune system?

A: Flumisol is thought to work by influencing specific components of the immune system that are overactive in certain chronic inflammatory conditions. This action may help to reduce inflammation and related symptoms.

Q: What should I know about the potential effects of Flumisol on disease activity?

A: Clinical trial data suggests that treatment with Flumisol may be associated with statistically significant improvement in measures of disease activity for the approved indications. Individuals receiving the medication have been observed to have a reduction in certain symptoms, compared to placebo.

Q: Is Flumisol associated with any side effects?

A: Like all medications, Flumisol may be associated with side effects. The most frequently observed adverse events in clinical trials included mild gastrointestinal upset, headache, and upper respiratory tract infections. A full list of potential side effects is available in the complete prescribing information and should be reviewed with a healthcare provider.

Q: Does Flumisol require special monitoring?

A: Due to the nature of the medication's effect on the immune system, healthcare providers may recommend regular monitoring of certain blood parameters throughout the course of treatment with Flumisol.

How should Flumisol be stored and disposed of?

How to Store and Dispose of Flumisol?

Regulatory labeling establishes strict requirements for the storage, handling, and disposal of Flumisol (Flumequine) to maintain its integrity and protect the environment.

Storage Requirements

The product must be stored in a cool, dry place and protected from light. The required storage temperature is typically not to exceed 25 C or 30 C. To maintain stability, the container must be kept tightly closed, and the product must be stored out of the reach and sight of children.

Stability and Disposal

Specific time limits apply once the product is compromised: the oral solution is stable for 3 months after first opening, while a diluted solution must be used within 24 hours. Disposal must be in accordance with local regulations; the product must not be released into the environment or discarded via drains or waterways. Handlers are also instructed to wear impervious gloves.

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

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