Fluximine

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Fluximine

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Fluximine

Quick Facts

Property Description
Active Ingredient Flunixin meglumine
Primary Forms Injectable Solution, Oral Paste, Granules
Pharmacological Class Non-Steroidal Anti-Inflammatory Drug (NSAID)
General Purpose Analgesia, Anti-inflammation, Antipyresis
Origin Synthetic drug (Nicotinic acid derivative)

What Type of Medicine is Fluximine and What is it Made Of?

Fluximine is a potent, synthetic medication classified as a Non-Steroidal Anti-Inflammatory Drug (NSAID). Its active ingredient is Flunixin, typically formulated as the stable salt Flunixin meglumine. This compound is chemically defined as a nicotinic acid derivative and functions as a single-ingredient product.

Flunixin is characterized by its potency compared to other agents in its class, positioning it as a key resource for managing acute conditions. As an NSAID, Flunixin meglumine's pharmacological class dictates its function as a non-selective cyclooxygenase (COX) inhibitor, targeting the fundamental biological processes that create inflammation. This non-steroidal and non-narcotic identity defines the nature of Fluximine as an agent for effective management of severe inflammatory states.


Understanding Fluximine’s Primary Forms and General Purpose

Fluximine is distributed in several dosage forms, including an injectable solution, oral paste, and granules. The availability of these forms allows the drug to be administered through various routes of administration, such as parenteral (injection) or oral routes, ensuring flexible application depending on the acute nature of the condition. Its primary general purpose is to intervene at the source of distress, providing comprehensive anti-inflammatory, analgesic (pain-relieving), and antipyretic (fever-reducing) effects.

Furthermore, Flunixin is recognized for exhibiting anti-endotoxic properties, offering a benefit in managing systemic effects caused by bacterial toxins. This dual mechanism combines traditional COX inhibition with the ability to mitigate certain endotoxin effects.

What side effects are possible with Fluximine?

The safety information for this compound, consistent with the pharmacological class of Non-Steroidal Anti-inflammatory Drugs (NSAIDs), highlights risks associated with their mechanism of action.

Key Adverse Reactions and Safety Profile

System-Organ Class Serious/Clinically Significant Adverse Reactions
Gastrointestinal System Gastrointestinal ulceration, bleeding, and perforation (e.g., peritonitis) are documented risks, especially with high doses or prolonged exposure.
Renal/Hepatic Systems Renal damage, hepatotoxicity, and exacerbation of pre-existing kidney or liver disease.
Blood/Immune System Blood dyscrasias and hypersensitivity reactions, including anaphylaxis, have been reported.

Frequency Classification: Regulatory safety summaries for the active substance (Flunixin) classify adverse events, with serious effects being generally reported as rare or very rare based on formal governmental monitoring frameworks.

Safety Restrictions and Monitoring

Official documents emphasize that the use of this compound is contraindicated in patients with established cardiac, hepatic, or renal disease, or where there is known potential for gastrointestinal ulceration or bleeding. Careful clinical monitoring is warranted in very young, aged, or dehydrated individuals.

Exposure is dose-dependent; therefore, exceeding the recommended dosage or duration is strictly prohibited as it significantly increases the risk of systemic toxicity, particularly in the gastrointestinal tract. This profile establishes a clear need for caution and adherence to all stated limitations to mitigate potential for serious organ damage.

Overdose and Emergency Response

Overdose and when to seek help

The most commonly reported clinical features following an overdose of Fluximine (Fluvoxamine) include gastrointestinal effects such as nausea, vomiting, and diarrhea, alongside central nervous system manifestations like somnolence, dizziness, and convulsions (seizures).

Cardiovascular effects have also been documented, including tachycardia (rapid heart rate) and bradycardia (slow heart rate), as well as hypotension (low blood pressure) and ECG changes, such as QTc prolongation.

While overdose with Fluximine as a single agent is generally associated with a low risk of a fatal outcome, the potential for a serious, life-threatening event is increased in cases of mixed overdose involving alcohol or other medications. Severe manifestations like coma, elevated liver enzymes, and serotonin syndrome have been reported.

When to Seek Urgent Medical Attention

Urgent medical attention is required for all suspected cases of overdose.

Emergency care involves general supportive and symptomatic measures, including establishing and maintaining a clear airway, ensuring adequate oxygenation and ventilation, and monitoring cardiac and vital signs. For specific symptoms, such as convulsions, an anticonvulsant may be administered.

Due to the variable nature of overdose presentations and the risk of serious complications, seek medical help immediately if an overdose is known or suspected, or if any severe symptoms, such as seizures, loss of consciousness, or severe muscle rigidity, occur.

Therapeutic Uses of Fluximine

What Fluximine Treats: Main Uses and Benefits

Fluximine is commonly used across conditions presenting with acute episodes where supportive symptom management is appropriate. The medication is applied across domains where additional symptomatic support is needed to address discomfort and systemic imbalance.


Easing Acute Discomfort and Systemic Strain

Fluximine is relevant for easing symptoms related to physical discomfort, including intense visceral distress like that associated with colic, and managing pain and inflammation in musculoskeletal disorders. It is also commonly used for managing conditions characterized by heightened inflammation and associated pyrexia (fever), such as acute mastitis or infectious respiratory disease.

In clinical scenarios, the medication is applied in settings where additional management of discomfort is required, playing a role in symptom management during severe bacterial infections, where it is used for managing symptoms related to systemic imbalance. This provides support that helps ease the overall symptom burden.

“This medication is considered relevant in contexts marked by increased discomfort or tension, supporting the patient during episodes of heightened discomfort.”

Quick Fact: Support for Systemic Discomfort Fluximine is used in conditions that present with symptomatic burden, providing support that helps ease the overall symptom load arising from acute pain, inflammation, and fever.

Regulatory References

  1. NIH DailyMed label overview

Eligibility and Restrictions for Use

Official Population Eligibility for Fluximine

Regulatory authorities define strict population eligibility rules for Fluximine (Flunixin meglumine) based on the species, age, physiological status, and underlying health of the patient. Use is generally permitted for Adult Horses, Beef Cattle, Swine, and Lactating Dairy Cattle.


Contraindicated Populations

Use is contraindicated (must not be used) in several specific groups according to official labeling:

  • Animals with known hypersensitivity to the active ingredient.
  • Animals with existing cardiac, hepatic, or renal disease.
  • Animals presenting with possible gastro-intestinal ulceration or bleeding or blood dyscrasia.
  • Pregnant Mares (use not established).
  • Breeding Bulls and Breeding Swine.
  • Calves to be processed for veal and Dry Dairy Cows.

Age and Physiological Restrictions

Population Group Regulatory Status
Piglets under 6 kg Not recommended/Do not use
Cows near Parturition Contraindicated within 48 hours of expected delivery
Dehydrated/Hypovolaemic Avoid use (risk of renal toxicity)
Suspected Renal Impairment Use judiciously

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory information for Fluximine (Flunixin meglumine) specifies interaction patterns that primarily relate to its classification as a Non-Steroidal Anti-Inflammatory Drug (NSAID).


Documented Interaction Restrictions

Classification Interacting Agents Rationale and Constraint
Contraindicated Other NSAIDs Risk of enhanced gastrointestinal and renal toxicity; use must be separated by a mandatory window of at least 24 hours.
Avoid Combination Corticosteroids Documented risk of compounded adverse gastrointestinal effects, including ulceration.
Avoid Combination Potentially Nephrotoxic Drugs Risk of augmenting renal toxicity; caution is heightened in patients who are dehydrated, hypovolaemic, or hypotensive.

Pharmacokinetic Interaction Note

Fluximine is highly bound to plasma proteins (approximately 99%). Regulatory documents note a pharmacokinetic interaction wherein Fluximine may compete with other highly protein-bound medicines for binding sites. This competition can potentially lead to an increase in the unbound, active concentration of either medicine, carrying a risk of toxic effects.

This information describes the constraints and prohibitions defined in official prescribing labels. There are no specific, formally documented interactions stated in government labels for co-administration with food, alcohol, or herbal products.

Mechanism of Action

How Fluximine Works: Mechanism of Action

Fluximine (Flunixin meglumine) operates through a distinct dual-mechanism focusing on the modulation of core inflammatory and systemic responses. The primary action involves the non-selective, reversible inhibition of the Cyclooxygenase (COX) enzymes, specifically COX-1 and COX-2. By blocking the catalytic activity of these enzymes, Flunixin prevents the conversion of Arachidonic Acid into various Prostaglandins and Thromboxanes. This targeted interference in the lipid mediator pathway attenuates the sensitization of peripheral nociceptors and modulates the local inflammatory cascade.

The mechanism extends to the central nervous system where COX-2 inhibition in the hypothalamus sharply reduces the concentration of pyrogenic Prostaglandin E2 ( PGE2). This central action initiates the reversion of the core thermal set-point to a non-febrile range, specifically modulating the central pathway governing thermal regulation.

A secondary mechanistic domain includes the functional attenuation of the host response triggered by bacterial toxins. This occurs through the suppression of potent systemic inflammatory mediators, such as Tumor Necrosis Factor-alpha ( TNF-alpha) and Interleukin-1 ( IL-1), released from immune cells. This reduction in cytokine signaling modifies the downstream physiological effects of the systemic inflammatory cascade.

Dosage and Administration Information

How to Use Fluximine (Flunixin Meglumine) — Administration Guidelines

Fluximine (Flunixin Meglumine) is a veterinary non-steroidal anti-inflammatory drug (NSAID) with specific usage parameters. The following details outline the established usage procedures, dosages, and administration constraints.


Approved Administration and Dosing

Species Route of Administration Standard Dosing Regimen
Horses Intravenous (IV) or Oral Paste 1.1 mg Flunixin/kg BW daily (for up to 5 days)
Cattle Intravenous (IV) Injection 1.1 to 2.2 mg Flunixin/kg BW daily (for up to 5 days)
Pigs Intramuscular (IM) Injection 2.2 mg Flunixin/kg BW (single administration)

Procedural Instructions and Constraints

Route and Technique: In cattle, the drug is administered by the intravenous route. For pigs, intramuscular injections are limited to the neck musculature, with a maximum volume of 5 mL per site. Administration, particularly via IV, should be performed slowly.

Treatment Duration: The use of Fluximine in horses and cattle is typically restricted to a maximum of five consecutive days. For horses with colic, a single dose is given, which may be repeated once or twice if signs recur. Concurrent use with other NSAIDs is not recommended.

Population Specifics: Use in animals less than six weeks of age or in aged animals carries additional risk; dosage may require adjustment. The drug is not approved for use in breeding swine or dry dairy cows.


These instructions define the protocol for administering Fluximine, establishing routes, dosage limits, injection techniques, and constraints on the duration and target populations.

Recent Clinical Evidence

Research evidence / Overview of studies for Fluximine

Research has explored the use of Fluximine in contexts involving visceral pain and intense discomfort, primarily focusing on Equids (Horses). Evidence largely comes from Randomized Clinical Trials (RCTs) designed to measure behavioral pain scores and the timing of observed changes in discomfort. The reported outcomes were short-term, focusing on the immediate, acute phase.

For musculoskeletal inflammation and pain, comparative studies examined Fluximine alongside other agents in the same class in subjects including Equids and Bovines (Cattle). These studies evaluated changes in inflammatory biomarkers and objective scores for lameness. While studies report patterns of change, comparative evidence is sometimes lacking for comprehensive assessment across all studied outcomes.

Fluximine was also studied in contexts involving systemic inflammation and fever (pyrexia) associated with infectious diseases. Research, mainly structured as Randomized Field Trials, explored outcomes such as changes in core body temperature and mortality/morbidity tracking in subjects like Bovines and Swine. These findings were often collected from settings where the medication was used as one component of a combination regimen, making the individual contribution of Fluximine less certain.

Most authoritative research focuses on short-term changes relevant to acute management; the typical follow-up durations were modest, and long-term outcomes are not fully established. Data for certain subgroups, such as immature subjects (e.g., young stock) or minor species like Donkeys and Sheep, remain limited. The overall evidence landscape highlights that evidence quality varies across studies, and certainty remains low regarding outcomes extending beyond short-term observation intervals. Research provides context but not individual predictions regarding whether a subject will respond similarly to the group patterns described in the studies.

Key Studies & References

  1. Flunixin Meglumine Injectable Solution (Veterinary Product Label) - NIH DailyMed
  2. WHO Collaborating Centre for Drug Statistics Methodology: ATCvet Index (QM01AG01 Flunixin)

Frequently Asked Questions (FAQ)

Common questions about Fluximine (FAQ)


Q: How quickly should I notice a difference after starting Fluximine?

Official studies indicate that the onset of activity has been observed as typically within 2 hours after administration, with the peak therapeutic response usually reached between 12 and 16 hours. For acute conditions, such as equine colic, studies report that positive changes were observed as quickly as less than 15 minutes in many subjects.


Q: Is it safe to take Fluximine if I have high blood pressure?

The official product information indicates that the drug is contraindicated (not to be used) in patients with established cardiac or cardiovascular dysfunction. Regulatory documents caution that patients with these pre-existing conditions are considered to be at the greatest risk for adverse events related to the drug.


Q: What are the most common side effects listed for Fluximine?

According to official product information, the most frequently reported adverse effects associated with this medication involve the gastrointestinal system. Serious effects related to organ toxicity are generally classified as rare or very rare based on formal government monitoring.


Q: Are there any major drug warnings or black box warnings for Fluximine?

Official warnings address critical safety risks, including the potential for anaphylactic-like reactions and severe risks of gastrointestinal, renal, and hepatic toxicity. The regulatory label also includes specific instructions regarding mandatory residue violation periods that must be strictly followed for food-producing animals.


Q: Are there any long-term health risks associated with Fluximine?

The regulatory label limits the use of this drug to a maximum of five consecutive days for most applications. Regulatory warnings indicate that prolonged or repeated exposure beyond the stated limits may cause damage to organs, including the gastrointestinal system and kidneys.


Q: Does Fluximine need to be taken with food?

For the oral granule formulation intended for horses, official administration instructions recommend sprinkling the product on a small amount of food. No specific instruction regarding food consumption is provided for the injectable solutions.


Q: What kind of monitoring (blood tests, etc.) is needed while taking Fluximine?

Regulatory documents state that caution is warranted when the drug is used in patients with existing hepatic disease (liver disease) or haematological disorders (blood disorders). Caution is also warranted when used concurrently with other potentially nephrotoxic drugs (medicines that can harm the kidneys).


Q: Can I use Fluximine if I am breastfeeding?

According to the official product eligibility, the drug may be used in lactating cattle.


Q: Do the side effects of Fluximine usually go away over time?

Some specific, transient adverse reactions are noted to resolve spontaneously without requiring additional treatment. Examples include local reactions at the injection site in pigs or temporary signs following accidental intra-arterial injection.


Q: How long does Fluximine stay in your system after the last dose?

Official pharmacokinetic data shows that the plasma half-life of the drug varies by species. It is approximately 1.6 hours in horses and between 3.14 to 8.12 hours in cattle. The drug may still be detectable in equine urine for at least 72 hours after the last administration.


Q: Will Fluximine make me feel 'out of it' or drowsy?

Adverse central nervous system (CNS) effects, such as ataxia (loss of muscle control), incoordination, and hysteria, have been reported in official documents. These effects have been reported in the context of accidental intra-arterial injection.


Q: Is there a generic version of Fluximine available?

Yes, the active ingredient Flunixin Meglumine is available as a generic injectable solution. This generic form has been formally approved for use through established regulatory pathways.


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

Official documents include warnings and first-aid measures for the human user regarding safe product handling. These instructions cover actions to take in the event of accidental self-injection or contact with the product on the skin or eyes.

How should Fluximine be stored and disposed of?

Fluximine (Flunixin meglumine) must be stored and disposed of according to official regulatory guidelines to maintain its stability and ensure safety.

Storage and Stability

The product must be stored at Controlled Room Temperature, typically 20 to 25 C (68 to 77 F). It is mandatory to protect the medicine from light and not allow it to freeze. Containers should be kept tightly closed in their original packaging and stored in a cool, dry place.

For injectable forms, a specific in-use shelf-life applies: any remaining product must be discarded after the maximum period of use following the first opening (e.g., 28 days).

Child Safety and Disposal

All forms of the medicine must be kept out of the sight and reach of children and stored in a secure, locked up location. Unused or expired Fluximine must be disposed of in accordance with all local and national regulations. The product must not be discarded via wastewater or household trash.

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

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