Fibranor

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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 Fibranor

What is Fibranor? A Foundational Overview

Property Description
Active ingredient Fenofibrate (prodrug)
Active metabolite Fenofibric acid
Form Oral capsule or tablet
Pharmacological class Fibrates (Antilipemic Agents)
Origin Synthetic small molecule

What Type of Medicine is Fibranor and How is it Classified?

Fibranor is a prescription-only pharmaceutical agent classified as an antilipemic medicine, which is intended to manage and regulate the levels of fats (lipids) in the bloodstream. Specifically, it belongs to the class of drugs known as fibrates (or fibric acid derivatives). The drug’s classification as a PPARalpha Agonist is clinically recognized for its role in modifying lipid profiles. Its fundamental purpose is to address imbalances in blood fats, known as dyslipidemia, which often manifests as elevated levels of triglycerides and other circulating fatty particles.

Fibranor's Active Component: Fenofibrate and its Form

The core active substance in Fibranor is the compound Fenofibrate, which is supplied for oral administration typically as a capsule or tablet. Fenofibrate is chemically categorized as a prodrug; it is intentionally inert when taken and requires rapid conversion within the body to its true therapeutic component, fenofibric acid, through a process called ester hydrolysis. This design ensures the reliable delivery of the therapeutic agent and provides a targeted pharmacological intervention based solely on the fibrate mechanism. Fibranor is formulated as a single active ingredient product, concentrating its therapeutic effect through the fenofibric acid metabolite to achieve its lipid-modifying goals.

Regulatory References

  1. National Institutes of Health (NIH) StatPearls
  2. MedlinePlus Drug Information

What side effects are possible with Fibranor?

Possible Side Effects and Safety Information

The safety profile for Fibranor (fenofibrate) is structured by government regulatory documents, identifying specific adverse reactions and safety constraints. The major areas of concern officially documented relate to the Hepatobiliary Disorders (liver and gallbladder) and Musculoskeletal Disorders (muscle tissue).

Officially Documented Adverse Reactions

Adverse reactions are classified by frequency, with common effects reported to occur in 1% to 10% of patients. These include abnormal liver tests (increased transaminases), headache, and gastrointestinal symptoms such as abdominal pain and nausea. Uncommon effects (ge 0.1% to < 1%) include the formation of gallstones (cholelithiasis), muscle disorders, and venous thromboembolic events.

Serious Safety Considerations

Regulatory labeling specifies several serious adverse reactions. These include Hepatotoxicity, which can lead to severe liver injury, and Myopathy/Rhabdomyolysis, which is the breakdown of muscle tissue. In clinical trials, a statistically significant increase in the incidence of Pulmonary Embolism has also been reported. The risk of muscle toxicity is officially noted to be increased in specific populations, including geriatric patients and those with renal impairment or uncontrolled hypothyroidism.

Safety Restrictions and Monitoring

Fenofibrate is formally restricted in populations with existing high risks. It is contraindicated (should not be used) in patients with severe renal impairment, active liver disease, or pre-existing gallbladder disease, as stated in regulatory documents. Monitoring of liver and kidney function is recommended, particularly during the initial phase of treatment, due to the documented potential for changes in transaminase and serum creatinine levels.

Overdose and Emergency Response

Overdose and When to Seek Help

Any suspected overdose of Fibranor (fenofibrate) requires immediate medical attention. Contact emergency services or a poison control center right away, as time is critical in managing potential toxicity.

Officially Documented Manifestations and Risks

The official regulatory guidance does not list a distinct set of acute overdose symptoms; rather, it mandates management based on the potential for known severe toxicities. These documented life-threatening outcomes include rhabdomyolysis (severe muscle breakdown) which can lead to acute renal failure, and hepatotoxicity (serious liver injury). Severe hypersensitivity reactions have also been reported in contexts requiring emergency care.

Required Emergency Actions

Treatment for fenofibrate overdose consists of general supportive care because no specific antidote is known. Hospital monitoring, including the observation of clinical status and monitoring of vital signs, is required. If indicated, a healthcare provider may initiate procedures to eliminate unabsorbed drug, such as gastric lavage (stomach pumping). Due to the medicine’s high binding to plasma proteins, regulatory information advises that hemodialysis should not be considered as a treatment measure.

Therapeutic Uses of Fibranor

What Fibranor Treats: Main Uses and Benefits

Easing Symptom Burden in Challenging Clinical Episodes

Fibranor (fenofibrate) is commonly used to help manage symptoms related to systemic imbalance that become more disruptive during flare-ups or periods of heightened physiological activity. Its use is considered relevant in contexts associated with official therapeutic recommendations. It is applied in contexts where additional symptomatic support is needed, commonly used across conditions presenting with acute episodes linked to systemic imbalance, such as conditions marked by increased physiological stress. This medication generally supports relief that helps ease the overall symptom load and may assist with maintaining a sense of stability when symptoms are more noticeable.

“This class of medication is relevant for easing the symptomatic burden associated with conditions involving episodic or fluctuating manifestations of systemic imbalance.”


Addressing Pronounced Systemic Manifestations

This medication is relevant for easing the symptomatic burden associated with conditions involving episodic or fluctuating manifestations of systemic imbalance. Fibranor is considered relevant for managing symptoms that create noticeable physiological strain and interfere with daily comfort. It contributes to easing the overall symptom load and helps improve day-to-day comfort during symptomatic periods, which is applied in settings marked by temporary physiological imbalance.

Quick Fact: Supportive management for systemic discomfort

Eligibility and Restrictions for Use

Fibranor’s eligibility is strictly defined by regulatory documents, primarily restricting use based on organ function, specific comorbidities, and age. The medicine is approved for use in adults who are managing severe hypertriglyceridemia or mixed dyslipidemia.

Contraindicated Populations (Must Not Use)

Use is contraindicated (absolutely prohibited) for several patient groups, including those with:

  • Severe renal impairment (e.g., eGFR less than 30 mL/min/1.73 m^2), End-Stage Renal Disease, or those on dialysis.
  • Active liver disease, including unexplained persistent liver function abnormalities.
  • Pre-existing gallbladder disease or known biliary tract disease.
  • Known hypersensitivity to fenofibrate or related compounds.
  • Nursing mothers (breastfeeding women).

Restricted and Conditional Eligibility

  • Pediatric patients (under 18 years): Use is not established and not recommended due to a lack of safety and efficacy data.
  • Renal Impairment: Patients with mild-to-moderate kidney impairment have restricted eligibility and must use a mandated adjusted dose.
  • Pregnancy: Use is conditional; it is only permitted if the potential benefit to the mother justifies the potential risk, as explicitly stated in the regulatory labeling.

What should I know about interactions with other medicines?

Fibranor Interactions with Other Medicines and Products

Fibranor (fenofibrate) has officially documented interactions with other medicines, primarily affecting muscle safety, blood coagulation, and drug clearance, as stated in regulatory prescribing information.


Documented Interaction Patterns

Interacting Substance Category Official Interaction Statement
Coumarin Anticoagulants (e.g., Warfarin) Fenofibrate officially potentiates the anticoagulant effect, resulting in a prolongation of the Prothrombin Time (PT/INR).
HMG-CoA Reductase Inhibitors (Statins) Increased risk of severe muscle toxicity, including myopathy and rhabdomyolysis, when co-administered.
Colchicine Officially noted to increase the risk of myopathy when used concomitantly.
Immunosuppressants (e.g., Cyclosporine) May lead to deterioration of renal function, which can reduce the clearance of fenofibric acid.

Pharmacokinetic and Timing Constraints

The active metabolite, fenofibric acid, is documented as a mild to moderate inhibitor of CYP2C9 and a weak inhibitor of CYP2C19 and CYP2A6, which may affect the concentration of drugs metabolized by these enzymes.

For Bile-Acid Binding Resins (e.g., Cholestyramine), the official label requires Fibranor to be administered at least 1 hour before or 4 to 6 hours after the resin to prevent absorption interference.

Population-Specific Notes

The risk of statin-related myopathy is explicitly noted to be increased in geriatric patients and those with diabetes, renal failure, or hypothyroidism, according to regulatory documents.

Mechanism of Action

Fibranor, which is the brand name for fenofibrate, functions as a peroxisome proliferator-activated receptor alpha (PPAR alpha) agonist. The active metabolite, fenofibric acid, interacts with and activates the nuclear receptor PPAR alpha, which is highly expressed in the liver and other metabolically active tissues.

Activation of PPAR alpha modulates gene transcription, leading to several intracellular consequences. Specifically, it upregulates the transcription and translation of lipoprotein lipase (LPL) and acyl-CoA synthetases, thereby promoting the catabolism and elimination of triglyceride-rich lipoproteins. Concurrently, it reduces the production of apolipoprotein C-III (Apo C-III), an endogenous inhibitor of LPL, further enhancing lipolysis. Furthermore, PPAR alpha activation increases the synthesis of apolipoproteins A-I and A-II, the primary protein components of high-density lipoprotein (HDL).

The collective molecular and intracellular pathways result in a system-level physiological modulation characterized by a decrease in plasma triglyceride and very-low-density lipoprotein (VLDL) levels, an enhanced fractional catabolic rate of VLDL, and an increase in circulating HDL levels.

Dosage and Administration Information

Fibranor (fenofibrate) is administered via the oral route as a single, once-daily dose. The medication is supplied as tablets or capsules, and official instructions emphasize that the dosage form must be swallowed whole and should not be crushed, split, or chewed. The specific labeled dosing regimen varies depending on the condition being managed and the formulation used, with official strengths typically ranging from 40 mg to 160 mg once daily.

A key instruction relates to timing with meals, which is formulation-dependent; some fenofibrate products require intake with food to ensure optimal absorption, while others may be taken independently. Administration also requires specific spacing from certain other therapies: if the medication is taken concurrently with a bile acid binding resin, Fibranor must be administered at least 1 hour before or 4 to 6 hours after the resin to avoid affecting absorption.

Usage over time follows a procedural protocol: treatment is initiated as an adjunct to a continued, appropriate diet. The initial response is typically assessed within 4 to 8 weeks after starting therapy. If an adequate response is not attained after two months of treatment at the maximum dose, official guidelines state that the therapy should be withdrawn. For specific populations, official use dictates that dosing must be reduced for patients with mild-to-moderate renal impairment, and its use is generally avoided or constrained in cases of severe renal impairment or in the pediatric population.

Recent Clinical Evidence

Research evidence / Overview of studies for Fibranor

Evidence for Use in Managing Blood Fat Imbalances (Dyslipidemia)

Research examined Fibranor's use in individuals with conditions characterized by specific blood fat imbalances, such as high triglyceride levels and mixed hyperlipidemia. These studies explored what outcomes were monitored in relation to blood fat levels by observing physiological strain over defined time intervals. These investigations used various clinical trial designs.

Studies describe patterns observed during the study period, including measurements showing a shift in triglyceride levels and HDL cholesterol levels in the observed populations. These findings contribute to the broader evidence landscape for conditions associated with cycles of stability and flare-ups related to blood fat levels. Results reflect the specific conditions under which they were conducted. Data for certain groups remain insufficient, and comparative evidence is lacking for specific endpoints.

Evidence for Effects on Microvascular Complications (Diabetic Retinopathy)

Research has explored Fibranor’s outcomes related to diabetic eye complications, which are conditions characterized by fluctuating or episodic manifestations. This evidence was derived from studies where the eye complication assessment was an additional outcome monitored in large-scale trials originally designed for other endpoints. The research examined Fibranor’s use in people with Type 2 Diabetes.

Research describes patterns observed in studies monitoring outcomes related to ocular procedures (such as laser treatment), which included fewer patients requiring such intervention in the observed populations. This finding was primarily noted in the subgroup of patients who had some degree of pre-existing eye disease at the start of the study. For those without pre-existing retinopathy, research describes findings where the observed difference compared to control groups was not notable. Long-term effects in this specific group are not fully established. It is not yet clear whether the product has a role in primary prevention for this condition.

Long-Term Follow-up and Cardiovascular Endpoints

To evaluate the duration of observation in long-term studies, the research involved large, long-term trials. These studies monitored outcomes reflecting daily functioning or activity level over defined time intervals. Research describes the results of these trials, exploring specific events monitored beyond changes in blood fat levels.

Outcomes Beyond Lipid Biomarkers

Studies monitored the outcomes describing episodic or acute changes, specifically focusing on the incidence of major cardiovascular events. Findings were mixed; studies reported that the product was observed in some studies where there were patterns related to fewer non-fatal heart events or revascularization procedures. However, data show patterns related to a difference that was not observable when assessing the main, or primary, outcome of major coronary events in the overall population.

Key Studies & References

  1. Effect of fenofibrate on progression of coronary disease in type 2 diabetes: the Fenofibrate Intervention and Event Lowering in Diabetes (FIELD) study
  2. Effect of fenofibrate on retinal outcomes in type 2 diabetes (ACCORD Eye Study)

Frequently Asked Questions (FAQ)

Common questions about Fibranor (FAQ)

Q: Is Fibranor the same kind of medicine as other cholesterol drugs?

A: Fibranor is classified as a fibrate, which is a class of medicine officially indicated to manage certain blood fat levels. According to official product information, fibrates belong to a different pharmacological group than other common cholesterol-lowering medicines, such as statins.


Q: Is Fibranor a statin?

A: No, Fibranor (fenofibrate) is a fibrate, and it is not in the statin class of medications (HMG-CoA reductase inhibitor). Official labeling includes a warning regarding an increased risk of muscle toxicity when fibrates are used with statins.


Q: What is the difference between Fibranor and fenofibrate?

A: Fenofibrate is the official name of the active drug ingredient. Fibranor is one of the brand names under which this drug is sold. Official information indicates that the different formulations are considered to have the same therapeutic effect, though they may have variations in their non-active components.


Q: Is it okay to stop taking Fibranor if my cholesterol numbers get better?

A: The decision to continue or discontinue therapy is a determination made by a healthcare professional. Official guidelines primarily address the protocol for withdrawal if an adequate response is not achieved after a set period of time. Official guidance indicates that treatment for chronic lipid disorders is typically long-term.


Q: How long do most people stay on Fibranor treatment?

A: Fibranor is officially indicated as a long-term treatment to manage chronic lipid disorders. Official guidance specifies that the medication is an ongoing addition to an appropriate diet for the long-term management of raised lipid levels.


Q: Why is Fibranor sometimes given with a statin?

A: Official information states that it may be used as an add-on therapy to a statin in specific patients who have a combination of high triglycerides and high cholesterol (mixed dyslipidemia). This use is intended to target lipid abnormalities that are not fully managed by a statin alone, despite the associated risk warnings.


Q: Does Fibranor affect blood sugar levels?

A: While Fibranor is not an anti-diabetic drug, official documents confirm that it is used in patients with underlying conditions such as diabetes mellitus. Official research has included examinations of its use in people with Type 2 Diabetes.


Q: Is Fibranor a long-term treatment?

A: Yes, official sources describe Fibranor as being used for the long-term treatment of raised blood fat levels. Official information describes its use over an extended period as an adjunct to a continued appropriate diet.


Q: How quickly does Fibranor start to work?

A: The active substance in Fibranor reaches its highest concentration in the bloodstream within a few hours after the tablet is taken. The official assessment of the full effect on blood fat levels typically occurs after four to eight weeks of use.


Q: Will I feel different when taking Fibranor?

A: Since the drug acts to modify lipid levels internally, many patients may not notice an immediate physical change. However, adverse reactions listed in the official product information include reports of side effects such as headache, stomach pain, or unusual weakness or fatigue.


Q: Do I need to change my diet while taking Fibranor?

A: Yes. Fibranor is officially designated as an adjunctive therapy to diet. Regulatory documents state that the medication is an addition to a continued, appropriate diet that is restricted in saturated fat and cholesterol, as the medicine is not a substitute for dietary management.


Q: Does Fibranor interact with common pain relievers like Tylenol (acetaminophen)?

A: Official information indicates that fenofibrate may increase the blood levels of acetaminophen. The co-administration of these medicines may require professional monitoring due to a potential for increased side effects or toxicity.


Q: What happens if I miss a dose of Fibranor?

A: Official product information suggests that if a dose is missed, the dose should be taken as soon as it is remembered. If it is almost time for the next scheduled dose, the patient should take only the next dose and not take a double or extra dose.


Q: What should I do if I accidentally take two doses of Fibranor?

A: In cases of potential overdose, the official regulatory label indicates that there is no specific treatment. Official guidance indicates that immediate medical attention should be sought, and treatment would consist of general supportive care.


Q: Can Fibranor affect fertility?

A: Non-clinical animal studies have examined the potential for fenofibrate to affect fertility. Official findings from these studies note that effects were observed only at doses that were significantly higher than the maximum recommended dose for humans.


Q: Why do people say Fibranor helps with non-cholesterol issues?

A: Official research evidence notes that studies have explored outcomes beyond just blood fat levels. This research has examined patterns related to fewer non-fatal heart events and its use as an additional monitored outcome for complications such as diabetic retinopathy.


Q: Is Fibranor available in different strengths?

A: Yes. According to the official regulatory label, fenofibrate is available in multiple dosage forms and strengths. These strengths vary by brand and formulation, with a typical range of equivalent doses for once-daily use.


Q: Will Fibranor thin my blood?

A: Fibranor is not officially classified as an anticoagulant ('blood thinner'). However, official regulatory documents state that it is capable of potentiating the anticoagulant effect of certain blood-thinning medicines, such as warfarin.


Q: Are there generic versions of Fibranor available?

A: Yes. The active ingredient, fenofibrate, is widely available as a generic drug. Fibranor is one of several brand-name products that contain this active ingredient.


Q: Can Fibranor cause dizziness or fatigue?

A: Official adverse reaction lists include both headache and unusual weakness or fatigue as documented side effects. Official safety information emphasizes the importance of reporting unexplained muscle pain, tenderness, or weakness, especially if accompanied by fever.


Q: Does taking Fibranor affect my energy level?

A: Yes. Unusual weakness or fatigue is listed in the official safety information as an adverse reaction that may be experienced while taking this medicine. Official safety information emphasizes the importance of reporting unexplained muscle pain, tenderness, or weakness, especially if accompanied by fever.


Q: Does Fibranor affect thyroid function tests?

A: The official label notes that hypothyroidism (underactive thyroid) is a known risk factor for muscle toxicity when using this medication. This highlights a physiological link between a patient’s thyroid status and the drug's safety profile.

How should Fibranor be stored and disposed of?

How to Store and Dispose of Fibranor (Fenofibrate)

Fibranor tablets must be stored at Controlled Room Temperature, which is typically defined as 20 C to 25 C (68 F to 77 F). The regulatory labeling permits temperature excursions between 15 C and 30 C (59 F and 86 F).

Mandatory Storage Requirements

Condition Requirement
Temperature Do not freeze.
Protection Protect from moisture and light.
Container Keep in the original, tightly closed container.
Safety Store out of the sight and reach of children.

Disposal Instructions

Fibranor is not on the list of medicines recommended for flushing down the toilet. Unused or expired medication should be disposed of through a drug take-back program. If a take-back option is unavailable, the medicine may be mixed with an undesirable substance (such as used coffee grounds or dirt) and placed in a sealed bag before being thrown in the household trash.

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

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