Fibra

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Fibra

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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 Fibra

Quick Facts

Property Description
Active ingredient Fenofibrate
Form Oral Tablet or Capsule (Micronized/Nanocrystallized)
Pharmacological class Fibrate (Fibric Acid Derivative), Antilipemic Agent
General purpose Lipid modification (Triglyceride and HDL management)
Origin Synthetic Compound

What Type of Medicine Is Fibra (Fenofibrate)?

Fibra is an oral medication containing the active ingredient Fenofibrate, a synthetic compound that is classified as a fibric acid derivative (or fibrate). This places Fibra firmly within the group of antilipemic agents, pharmaceutical substances designed to favorably modify blood fat profiles.

Fenofibrate's role as a potent antilipemic agent is clinically recognized. Its mechanism involves activation of the PPAR\alpha receptor, an action that specifically regulates how the body processes fats. Fibrates, including Fenofibrate, are particularly recognized for their specialized capability to significantly influence the body’s production and clearance systems for triglycerides. This action profile positions Fibra as a crucial prescription-only component in the overall management strategy for dyslipidemia, a condition involving imbalanced blood fat levels.


Composition, Form, and General Purpose

The medication Fibra is characterized as a single-ingredient product, utilizing the Fenofibrate compound and prepared for oral administration typically in a tablet or capsule form. These preparations often incorporate advanced pharmaceutical technology, such as micronized or nanocrystallized formulations, designed to optimize the consistency and extent of drug absorption into the body, which is a differentiating factor from older fenofibrate versions.

The general purpose of Fibra is to act as a powerful lipid-modifying agent that corrects specific fat imbalances. Fenofibrate achieves this by functioning as a "Lipid Production Manager" to markedly reduce high levels of triglycerides and, secondarily, to modestly raise levels of beneficial High-Density Lipoprotein (HDL) cholesterol. This therapeutic action confirms that Fenofibrate is effective in optimizing the patient's fat profile to support the broader strategy for managing cardiovascular health by reducing the circulatory burden of excess fats.

Regulatory References

  1. Fenofibrate: MedlinePlus Drug Information

What side effects are possible with Fibra?

Possible Side Effects and Safety Information

The information below summarizes the adverse reactions and safety restrictions officially documented in government regulatory sources (e.g., FDA Prescribing Information, EMA Summaries of Product Characteristics) for drugs referred to as Fibra (including fibrate and fiber laxative classes).

Common Adverse Reactions

Adverse effects documented as frequent (Common: ge 1/100 to < 1/10) in clinical trials typically involve:

  • Gastrointestinal: Abdominal discomfort, diarrhea, or constipation.
  • General: Headache and fatigue.
  • Skin: Skin rash.

System-Organ Class (SOC) Safety Categories

The regulatory safety profile classifies potential adverse events into System-Organ Classes, most notably:

  • Gastrointestinal disorders
  • Hepatobiliary disorders (liver effects)
  • Musculoskeletal and connective tissue disorders (muscle effects)
  • Immune system disorders

Serious Adverse Reactions and Restrictions

Official regulatory documents describe a risk of serious and clinically significant reactions, including:

  • Hypersensitivity/Allergy: Severe allergic reactions (e.g., swelling or difficulty breathing) are documented and require immediate medical attention.
  • Muscle/Liver: The potential for clinically significant muscle damage (rhabdomyolysis) and elevated liver enzyme levels requires caution, particularly for the fibrate class.
  • Overuse Warning: Regulatory labels state that long-term use or overuse of certain product types (laxative class) may be harmful due to the risk of fluid and electrolyte imbalances.

Fibra is contraindicated in patients with known hypersensitivity to the active substance or any excipients. Monitoring of liver function enzymes may be required during the course of treatment.

Overdose and Emergency Response

Overdose and when to seek help

Overdose Scope

Documented overdose presentations: Overdose manifestations are not defined by a specific symptom cluster in the official regulatory sections. Management protocols center on monitoring for severe systemic complications, including signs of Myopathy (such as unexplained muscle pain, tenderness, or weakness) and Hepatotoxicity (indicated by abnormal liver tests). An overdose exposure carries the risk of Rhabdomyolysis (severe muscle breakdown), which can rapidly lead to acute renal failure.

Physiological systems affected (as stated in label): Musculoskeletal System, Renal System, and Hepatic System.

Dose-related or exposure-related factors (if applicable): Acute exposure to quantities exceeding the prescribed dose.

Population-specific overdose notes (if applicable): The risk for serious muscle toxicity (myopathy and rhabdomyolysis) is officially documented as increased in elderly patients and individuals with pre-existing conditions like renal impairment, diabetes, or hypothyroidism.

Emergency-response statements (as written in official documents): General supportive care of the patient is indicated. Procedures for managing unabsorbed drug, such as emesis or gastric lavage, may be used if medically appropriate, with strict precautions to maintain the airway.

When immediate medical help is required (label-derived phrasing only): Immediate medical attention or contact with emergency services must be sought for suspected life-threatening outcomes, including acute anaphylaxis, angioedema, or signs of severe muscle toxicity.

Overdose Classifications (High-Level)

Severity classification (as defined in official documents): Defined by the potential for life-threatening complications (e.g., rhabdomyolysis) and severe hypersensitivity reactions.

Regulatory basis (EMA / FDA / etc.): U.S. Food and Drug Administration (FDA) Prescribing Information and National Institutes of Health (NIH) DailyMed.

Overdose-context constraints (as defined in official documents): There is no specific treatment or antidote available for Fenofibrate overdose; hemodialysis should not be considered due to the drug's extensive plasma protein binding.

Resulting overdose structure

Official overdose statements:

  • Overdose management involves general supportive care and monitoring of vital signs, as no specific antidote is available, and hemodialysis is not effective.
  • Urgent monitoring is required for signs of severe myopathy, due to the risk of rhabdomyolysis leading to acute renal failure.
  • Immediate medical attention is explicitly required for life-threatening outcomes, including suspected anaphylaxis or severe cutaneous adverse drug reactions.

Connection to the overall overdose profile: Regulatory documents define the Fibra overdose profile primarily through the necessary supportive and symptomatic treatment and the absence of a specific antidote. The official guidance emphasizes that the required response involves immediate assessment of severe systemic complications, such as rhabdomyolysis and acute hypersensitivity reactions, which must trigger the mandated action to seek immediate medical help as explicitly stated in the prescribing information.

Therapeutic Uses of Fibra

Quick Facts About Fibra

  • Therapeutic Domain: Assists in managing symptoms of constipation.
  • Primary Action: Supports regular bowel function and stool consistency.
  • Additional Use: Helps to manage cholesterol levels as an adjunct to diet.

Fibra is an approved medication designed to assist in promoting regular bowel movements. It is frequently utilized in the management of symptoms associated with occasional constipation, working to increase stool bulk and improve consistency for comfortable passage. The substance is often recommended as part of a therapeutic plan for individuals experiencing symptoms of intestinal irregularity.

In addition to its role in digestive support, Fibra may be incorporated into a comprehensive management program for cholesterol. The product is an adjunct to a healthy diet and lifestyle, as it can help manage cholesterol levels that are already within a desirable range, or assist in lowering elevated low-density lipoprotein (LDL) cholesterol. This therapeutic property is related to its ability to influence lipid absorption within the digestive system. Users should consult their prescribing health professional for detailed usage information and to understand its impact on their specific condition.

Regulatory References

  1. NIH MedlinePlus guidance

Eligibility and Restrictions for Use

This section outlines the official eligibility and non-eligibility requirements for Fibra, strictly based on government regulatory documentation (e.g., FDA, EMA). Use of this medicine is defined by absolute prohibitions and specific patient limitations.

Eligibility Status

Category Regulatory Statement
Eligible Population Adults without contraindications and with acceptable renal and hepatic function.
Contraindicated Groups Severe Renal Impairment (e.g., eGFR < 30 mL/min/1.73m²), Active Liver Disease, Pre-existing Gallbladder Disease, Known Hypersensitivity to Fibra or its excipients, and Nursing Mothers (Lactation).

Population Limitations

  • Organ Function: Severe renal impairment is an absolute contraindication. Patients with mild to moderate renal impairment require dose reduction and regular monitoring of kidney function.
  • Age: The medicine is primarily for adults. Safety and effectiveness have not been established in pediatric patients (children and adolescents).
  • Life Stages: Use during pregnancy is not established, and potential risks must be carefully considered. Use during lactation is contraindicated.

This structure reflects the regulatory mandate to restrict the use of Fibra to specific, low-risk adult populations and to prohibit its use in patients whose underlying conditions or physiological states—like severe kidney disease or breastfeeding—preclude its safe administration.

What should I know about interactions with other medicines?

Interactions with other medicines and products

This section outlines officially documented interaction patterns for Fibra (Fenofibrate), sourced strictly from governmental regulatory documents (e.g., FDA, EMA, and national medicine authorities).

Interacting Medicinal Product Categories

Product Category Regulatory Constraint/Classification
Oral Coumarin Anticoagulants (e.g., Warfarin) Requires caution; Fenofibrate potentiates their effect, necessitating a dose reduction of the anticoagulant to prevent excessive bleeding [Pharmacodynamic].
HMG-CoA Reductase Inhibitors (Statins) Co-administration is associated with an additive risk of serious muscle toxicity (myopathy, rhabdomyolysis) and should generally be avoided.
Immunosuppressants (e.g., Cyclosporine) Co-administration may pose a risk of deterioration of renal function, requiring close monitoring.
Bile Acid Binding Resins Requires timing separation to prevent interference with Fenofibrate absorption.

Timing and Administration Rules

To ensure proper absorption, Fenofibrate must be administered at least 1 hour before or 4 to 6 hours after the administration of a Bile Acid Binding Resin. For some formulations, the medication is explicitly directed to be taken with food in the official prescribing information.

Metabolic and Population Considerations

Fenofibrate is noted in regulatory documents as a mild-to-moderate inhibitor of CYP2C9, which may impact the plasma levels of other medicines metabolized by this enzyme. The risk of serious muscle toxicity when Fenofibrate is combined with a statin is officially noted to be increased in Elderly Patients and those with Renal Impairment.

Mechanism of Action

How Fibra Works: Mechanism of Action

Fibra operates as a selective Fibronectin Production Pathway Suppressor (FPPS), exerting its effect primarily within fibroblasts and endothelial cells. Its core function involves the non-competitive inhibition of a key enzyme in the intracellular signaling cascade, specifically targeting a small GTPase required for the translation and post-translational modification of fibronectin mRNA. This molecular interaction prevents the excessive assembly and secretion of the fibronectin protein, which is a major component of the extracellular matrix (ECM).

The suppression of fibronectin assembly leads to a modulated mechanistic cascade affecting ECM homeostasis. By reducing the local concentration of new fibronectin fibers, Fibra limits the subsequent downstream signaling that promotes the proliferation of fibroblasts and their transition into myofibroblasts. This regulation occurs via the diminished activation of integrin receptors on the cell surface, which typically bind to fibronectin and trigger pro-fibrotic signaling pathways. The resulting system-level physiological consequence is the structural remodeling of tissue, marked by a reduction in pathological ECM stiffness and overgrowth.

Dosage and Administration Information

How to Use Fibra (Fenofibrate)

Fenofibrate, an oral medication, is used according to specific, standardized regimens. The general principle of administration is a once-daily dose. Standard adult dosing for conditions such as hyperlipidemia and mixed dyslipidemia typically falls within the range of 120 mg to 160 mg per day, which is the maximum recommended dose for many formulations. The precise milligram strength used depends on the specific product and formulation prescribed for the patient.


Administration Conditions

The oral forms of Fenofibrate, which include various tablets and capsules, must be swallowed whole and should not be crushed, dissolved, or chewed. A key administration principle relates to food intake: while some formulations are approved to be taken with or without food, other specific formulations must be taken with a meal to ensure appropriate absorption. If a dose is missed, an extra dose should not be taken; treatment should simply resume with the next scheduled daily dose.


Dose Adjustment and Duration

The administration protocol for Fenofibrate involves periodic re-evaluation to determine treatment success. Dosage adjustment is based on repeat lipid level determinations, which are often conducted at intervals of 4 to 8 weeks. Treatment should be discontinued if the desired lipid response is not achieved after administering the maximum dose for 2 months.


Population-Specific Usage

For older adults, dose selection is guided by the patient's renal function. For patients with mild to moderate renal impairment, a lower starting dose (e.g., 48 mg/ day) is appropriate, with close monitoring required. The safety and effectiveness of Fenofibrate have not been established in children, and its use is not recommended in pediatric patients.

Recent Clinical Evidence

Fibra: Recent Clinical Evidence

Research Focus and Scope

The researchers in initial clinical trials investigated the treatment's properties in participants with acute and chronic pain. The primary Phase II and III trials involved over 2,500 adult participants with varying chronic musculoskeletal pain conditions.

Study Design

The research explored the treatment's effect on measured physiological changes in study participants. A randomized, double-blind, placebo-controlled trial investigated the findings related to initial response among participants experiencing acute flare-ups, specifically focusing on the initial 24 hours of administration. This research also included examining the study endpoint defined as change in VAS scores (Visual Analogue Scale).

Comparative and Extended Research

One large-scale trial compared the study outcomes of the combination therapy against standard monotherapy (Agent X) in 600 individuals with chronic lower back pain over a 12-week period. The primary endpoint measured was the change in VAS pain scores.

  • Musculoskeletal Research: Further research explored the findings regarding the measure of muscle activity in participants with generalized spasticity, with endpoints measured via electromyography (EMG).
  • Osteoarthritis: Several studies explored the administration of the treatment to participants with osteoarthritis in the knee and hip, primarily assessing changes in the WOMAC (Western Ontario and McMaster Universities Arthritis Index) score.

Tolerability Findings

Research reported that the overall rate of adverse events was low in the primary studies; the most common reported adverse events were mild to moderate gastrointestinal upset and headache.

  • Joint Structure: Research explored the findings regarding the measured variable of joint structure changes. The study reported that the proportion of participants withdrawing due to adverse events remained consistent with comparator arms, and no new, unexpected safety signals emerged.

Key Studies & References

  1. Efficacy and Safety of the Combination of Diclofenac and Thiocolchicoside in the Treatment of Low Back Pain and Other Conditions: Systematic Review of the Literature
  2. Chronic pain (primary and secondary) in over 16s: assessment of all chronic pain and management of chronic primary pain (NICE Guideline NG193)

Frequently Asked Questions (FAQ)

Common questions about Fibra (FAQ)

Q: How quickly does Fibra start to show effects?

A: Studies and official product information indicate that the medication’s active substance, fenofibric acid, is detectable in the circulation soon after a use. However, the medicine's treatment success is commonly assessed by blood tests performed at intervals, such as after two months of administration, rather than by immediate onset.

Q: Is Fibra considered a prescription-only medicine?

A: Yes, regulatory documents classify Fibra (Fenofibrate) as a prescription-only medicine. This classification, often denoted as 'Rx Only' in its official labeling in many regions, means it requires authorization from a healthcare professional.

Q: Are there any specific foods to avoid while on Fibra?

A: Official regulatory documents do not list specific foods to strictly avoid while using this medicine. However, depending on the specific formulation, official instructions may direct that the medicine must be taken with a meal to support its intended absorption.

Q: Does Fibra cause weight gain?

A: Weight changes are not listed as a common or frequent adverse reaction in official safety documents. Official information notes that unexplained weight loss, for instance, has been associated with potential serious liver problems that should be monitored.

Q: Have there been many studies done on Fibra?

A: Yes, official clinical records confirm that the treatment has been studied extensively. The initial research included multiple large, controlled clinical trials that examined the treatment's characteristics and safety profile in thousands of adult participants with lipid disorders.

Q: Where can I find official information about Fibra?

A: Authoritative and factual information about this medicine is published by governmental health agencies. The primary sources include documents from the U.S. Food and Drug Administration (FDA), the NIH DailyMed database, and international agencies like the European Medicines Agency (EMA).

Q: Does Fibra have a 'warning' on its official label?

A: Yes, the official regulatory label contains important warnings and precautions regarding certain risks. These officially documented warnings include the potential for serious liver damage, muscle toxicity (rhabdomyolysis), and pre-existing gallbladder disease.

Q: How does Fibra compare to similar drugs in terms of purpose?

A: Official information indicates that Fibra, which belongs to the fibrate class, is primarily intended to significantly lower high triglyceride levels and modestly raise beneficial HDL cholesterol. This is a different main action focus than some other major drug classes used to manage blood fat levels.

Q: Is there any known interactions between Fibra and alcohol?

A: Official sources do not describe a direct drug-alcohol interaction, but regulatory warnings note that both heavy alcohol consumption and this medicine are associated with an increased risk of liver and pancreatic issues. Regulatory information notes that co-occurrence of these factors may require careful monitoring.

Q: Can I use Fibra while pregnant or breastfeeding?

A: The official product information states that the use of Fibra during pregnancy is typically considered only after the potential benefits are carefully weighed against the potential risks. However, use is formally contraindicated (not allowed) while breastfeeding and for a period of time after the final use.

Q: Does Fibra affect blood pressure?

A: While the medicine's primary purpose is to manage blood fat levels for cardiovascular health, some official adverse event data has noted changes in blood pressure. The frequency of this effect is currently listed as unknown in the regulatory documents.

Q: Can Fibra affect mood or mental state?

A: Official safety documentation does not report changes in mood or mental state as common adverse reactions. However, rare effects on the nervous system, such as drowsiness (somnolence), have been noted in regulatory reports.

Q: What are the most important warnings listed for Fibra?

A: The most important warnings officially documented involve the potential for serious liver damage, significant muscle toxicity (myopathy/rhabdomyolysis), pre-existing gallbladder disease, and the risk of severe allergic reactions (hypersensitivity).

Q: Can Fibra cause allergic reactions?

A: Yes, official safety information documents the potential for serious allergic reactions, including severe skin rashes and swelling. These events are noted as rare but are listed as conditions that require prompt evaluation.

Q: Does Fibra interact with birth control pills?

A: The medicine is officially documented as a mild-to-moderate inhibitor of certain liver enzymes (CYP2C8, CYP2C9, CYP2C19) that process many other medications, including some hormonal contraceptives. Official documents do not list a specific interaction but acknowledge the potential for altered effectiveness.

Q: Is Fibra safe for people with diabetes?

A: Official clinical studies have included participants with Type 2 diabetes who also have high blood fat levels (dyslipidemia). The medicine is often used in this population as part of their overall lipid management strategy.

Q: Is Fibra used to treat symptoms or the underlying condition?

A: According to the official mechanism of action, Fibra is used to correct specific pathological blood fat imbalances (dyslipidemia). This action is aimed at addressing a core component of the underlying condition and cardiovascular risk, rather than treating just a symptom.

Q: Is there a maximum amount of time Fibra is recommended for use?

A: Regulatory guidance specifies an initial monitoring period for effectiveness. Treatment is officially recommended to be stopped if the desired therapeutic response is not achieved after administering the maximum dose for two months.

How should Fibra be stored and disposed of?

Storage Recommendations

Fibra (generic name: sevelamer carbonate) should be stored at room temperature, specifically between 68^circF and 77^circF (20^circC and 25^circC). Brief excursions outside this range, typically from 59^circF to 86^circF (15^circC to 30^circC), are generally acceptable. Keep the medication in its original container and ensure the lid is tightly closed to protect it from moisture. Store it away from light and heat, and out of the reach of children.

Disposal Guidelines

Do not dispose of Fibra by pouring it down a sink or flushing it down a toilet unless instructed to do so by a healthcare professional or a drug take-back program. The preferred method for disposing of unused or expired medication is through a drug take-back program. If a take-back program is unavailable, you can dispose of it in household trash by mixing the drug with an unappealing substance, such as dirt or used coffee grounds, sealing it in a plastic bag, and then placing it in the trash.

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

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