Fenofibrate (TriCor)
fenofibrate
Fenofibrate Indications
| Indication | Approved Population | Therapy Type | Status |
|---|---|---|---|
| Primary hypercholesterolemia or mixed dyslipidemia — to reduce elevated LDL-C, Total-C, TG, Apo B, and increase HDL-C | Adults | Adjunctive to diet | FDA Approved |
| Severe hypertriglyceridemia — treatment of elevated triglycerides (Fredrickson types IV and V) | Adults | Adjunctive to diet | FDA Approved |
Fenofibrate is a first-line fibrate option for patients whose primary lipid abnormality is elevated triglycerides or atherogenic dyslipidemia (high TG, low HDL-C, small dense LDL). It is used as adjunctive therapy to diet after secondary causes of hyperlipidemia have been excluded. Clinicians should note the important limitation of use: fenofibrate was not demonstrated to reduce coronary heart disease morbidity and mortality in patients with type 2 diabetes in the FIELD and ACCORD Lipid trials (FDA PI).
Diabetic retinopathy (moderate evidence): The FIELD and ACCORD-Eye trials demonstrated that fenofibrate reduced the need for laser photocoagulation and slowed retinopathy progression in type 2 diabetes, though this is not an FDA-approved indication. Australia has approved fenofibrate for diabetic retinopathy in patients with type 2 diabetes and pre-existing retinopathy.
Hyperuricemia associated with gout (low evidence): Fenofibrate has a well-documented uricosuric effect, reducing serum uric acid levels by increasing urinary excretion. Some clinicians use it as adjunctive therapy in patients with gout who also have dyslipidemia, though formal evidence for gout outcomes is limited.
Dosing
Adult Dosing by Clinical Scenario (TriCor formulation)
| Clinical Scenario | Starting Dose | Maintenance Dose | Maximum Dose | Notes |
|---|---|---|---|---|
| Mixed dyslipidemia — statin-intolerant patient or primary TG/HDL target | 145 mg once daily | 145 mg once daily | 145 mg/day | May be taken without regard to meals (TriCor formulation) Reassess lipids at 4-8 weeks |
| Severe hypertriglyceridemia — TG > 500 mg/dL, pancreatitis risk reduction | 48-145 mg once daily | 145 mg once daily | 145 mg/day | Start lower if co-existing renal or hepatic concern; titrate by lipid response Withdraw if inadequate response after 2 months at max dose |
| Atherogenic dyslipidemia in type 2 diabetes — add-on to statin | 145 mg once daily | 145 mg once daily | 145 mg/day | Preferred fibrate for statin combination (safer than gemfibrozil) Monitor for myopathy; avoid gemfibrozil co-administration |
| Mild-to-moderate renal impairment (CrCl 30-80 mL/min) | 48 mg once daily | 48 mg once daily | 48 mg/day | Increase only after evaluating renal function and lipid response Avoid in severe renal impairment (CrCl <30 mL/min) or dialysis |
| Elderly patients (≥65 years) | 48 mg once daily | 48-145 mg once daily | 145 mg/day | Dose selection based on renal function Higher risk for myopathy; monitor CK and creatinine |
Multiple fenofibrate formulations exist with different dose strengths due to varying bioavailability profiles. TriCor 145 mg (nanocrystal tablet) is bioequivalent to micronized capsule 200 mg, Lipofen 150 mg, and Triglide 160 mg. When switching formulations, dose conversion is essential. TriCor 48 mg corresponds to micronized 67 mg. TriCor tablets may be taken without regard to meals, but some other formulations require food for optimal absorption.
Pharmacology
Mechanism of Action
Fenofibrate is a prodrug that is rapidly converted to its active metabolite, fenofibric acid, by tissue and plasma esterases. Fenofibric acid activates peroxisome proliferator-activated receptor alpha (PPARα), a nuclear transcription factor that regulates genes involved in lipid and lipoprotein metabolism. PPARα activation upregulates lipoprotein lipase expression while suppressing apolipoprotein C-III production, resulting in enhanced clearance of triglyceride-rich particles from plasma. This process also shifts LDL particle composition from small, dense atherogenic forms toward larger, more buoyant particles with greater receptor affinity. PPARα activation simultaneously increases synthesis of apolipoproteins A-I and A-II, which elevates HDL-C concentrations. Separately, fenofibrate promotes uric acid excretion through the kidneys, producing a clinically relevant uricosuric effect.
ADME Profile
| Parameter | Value | Clinical Implication |
|---|---|---|
| Absorption | Well absorbed (~60%); Tmax 6-8 h; food enhances absorption for some formulations; TriCor can be taken without regard to meals | Onset of lipid effects over days; steady-state fenofibric acid levels reached in approximately 9 days with twice the single-dose concentrations |
| Distribution | Vd 0.89 L/kg; protein binding ~99% (albumin) | Highly protein-bound; hemodialysis is ineffective for drug removal in overdose; limited extravascular distribution |
| Metabolism | Rapid ester hydrolysis to fenofibric acid (active); fenofibric acid conjugated with glucuronic acid via UGT; no significant CYP450 metabolism | Low CYP-mediated drug interaction risk; mild-to-moderate CYP2C9 inhibition; no unchanged fenofibrate detected in plasma |
| Elimination | t½ 20 h; 60% excreted in urine (as fenofibric acid and glucuronide conjugate); 25% in feces | Once-daily dosing is supported; dose reduction required in renal impairment (2.7-fold AUC increase in severe impairment) |
Side Effects
| Adverse Effect | Incidence | Clinical Note |
|---|---|---|
| No individual adverse effect reaches ≥10% incidence in pivotal trials | N/A | Fenofibrate has a relatively favorable tolerability profile; the most frequent effects cluster in the 2-8% range |
| Adverse Effect | Incidence | Clinical Note |
|---|---|---|
| Abnormal liver function tests | 7.5% vs 1.4% placebo | Dose-related; transaminases >3x ULN in 5.3% (pooled data); usually reversible on discontinuation |
| Respiratory disorder | 6.2% vs 5.5% placebo | Upper respiratory symptoms; modest excess over placebo |
| Abdominal pain | 4.6% vs 4.4% placebo | Similar to placebo; consider biliary causes if persistent |
| Back pain | 3.4% vs 2.5% placebo | Distinguish from myalgia; assess CK if associated with muscle weakness |
| Increased AST | 3.4% vs 0.5% placebo | Statistically significant excess; monitor periodically |
| Headache | 3.2% vs 2.7% placebo | Generally mild and self-limiting |
| Increased CPK | 3.0% vs 1.4% placebo | Warrants evaluation for myopathy, particularly with statin co-use |
| Increased ALT | 3.0% vs 1.6% placebo | Dose-related; incidence 13% at high doses vs 0% at ≤48 mg equivalent in dose-ranging study |
| Nausea | 2.3% vs 1.9% placebo | Typically transient; take with food if bothersome |
| Rhinitis | 2.3% vs 1.1% placebo | May represent upper respiratory tract irritation |
| Constipation | 2.1% vs 1.4% placebo | Manage with dietary fibre and hydration |
| Rash / Urticaria | 1.4% / 1.1% vs 0.8% / 0% placebo | Photosensitivity reactions reported postmarketing, sometimes occurring months after initiation; prior ketoprofen photosensitivity may be a risk factor |
| Adverse Effect | Estimated Frequency | Typical Onset | Required Action |
|---|---|---|---|
| Rhabdomyolysis | Rare | Weeks to months; risk increased with statin co-use | Immediate discontinuation; aggressive IV hydration; monitor CK, renal function, and electrolytes; risk markedly higher with gemfibrozil-statin than fenofibrate-statin combinations |
| Hepatotoxicity (hepatocellular, cholestatic, or chronic active hepatitis) | ~5.3% with transaminases >3x ULN | Weeks to years | Discontinue if ALT/AST persistently >3x ULN; monitor LFTs periodically throughout therapy |
| Cholelithiasis | Uncommon (~3% class effect from fibrate trials) | Months to years | Gallbladder studies if cholelithiasis suspected; discontinue if gallstones confirmed |
| Pancreatitis | Rare | Variable; may reflect treatment failure in severe hypertriglyceridemia or biliary obstruction | Discontinue fenofibrate; supportive care; investigate biliary causes |
| Venous thromboembolism (DVT/PE) | PE: 1.1% vs 0.7% placebo (FIELD trial); DVT: 1.4% vs 1.0% | Any time during therapy | Evaluate for VTE in patients presenting with relevant symptoms; standard anticoagulation if confirmed |
| Anaphylaxis / Angioedema | Very rare (postmarketing) | Any time; some cases life-threatening | Emergency treatment; permanent discontinuation of fenofibrate |
| Stevens-Johnson syndrome / TEN / DRESS | Very rare (postmarketing) | Days to weeks after initiation | Immediate discontinuation; dermatology and burn unit referral as appropriate; do not rechallenge |
| Acute renal failure | Very rare (postmarketing) | Variable; higher risk with nephrotoxic co-medications | Discontinue fenofibrate; nephrology consultation; distinguish from the benign, reversible serum creatinine rise seen with fenofibrate |
| Paradoxical severe decrease in HDL-C | Rare (postmarketing) | 2 weeks to years after initiation | Check HDL-C within first few months; withdraw fenofibrate if severely depressed HDL-C detected; HDL recovers rapidly after discontinuation |
| Reason for Discontinuation | Incidence | Context |
|---|---|---|
| Elevated liver function tests | 1.6% | Most common cause of treatment discontinuation; dose-related effect |
| Gastrointestinal symptoms | ~1.0% | Includes abdominal pain, nausea, and diarrhoea |
| All other causes combined | ~2.4% | Includes myalgia, rash, headache, and miscellaneous reasons |
Transaminase elevations are the most clinically significant tolerability issue with fenofibrate. In a dose-ranging study, ALT/AST increases to at least three times ULN occurred in 13% of patients at higher doses (equivalent to 96-145 mg TriCor) but in 0% at 48 mg or lower. If elevations are detected, confirm with a repeat level within 1-2 weeks. Discontinue fenofibrate if transaminases remain persistently above three times the normal limit. Values typically normalise after drug withdrawal.
Drug Interactions
Fenofibrate does not undergo significant CYP450 oxidative metabolism. Its active metabolite, fenofibric acid, is conjugated via glucuronidation and excreted renally. While this profile results in relatively few pharmacokinetic drug interactions, clinically important pharmacodynamic interactions exist, particularly with anticoagulants, statins, and nephrotoxic agents.
Monitoring
-
Lipid Panel
Baseline, 4-8 weeks, then periodically
Routine Total cholesterol, LDL-C, HDL-C, triglycerides, Apo B at baseline and for dose titration. Withdraw therapy if inadequate response after 2 months at maximum dose. Also check HDL-C within first few months to detect paradoxical severe decreases. -
Liver Function Tests
Baseline, then periodically throughout therapy
Routine ALT (SGPT) is the primary marker. Discontinue if transaminases persist above 3x ULN. Dose-related effect: 13% incidence of ≥3x ULN at higher doses vs 0% at ≤48 mg equivalent. -
Renal Function
Baseline, then periodically
Routine Serum creatinine and estimated GFR. Fenofibrate reversibly raises serum creatinine through a mechanism unrelated to kidney damage, but genuine nephrotoxicity can occur, especially with concomitant nephrotoxic drugs. Consider monitoring more frequently in elderly and diabetic patients. -
CBC
First 12 months of therapy
Routine Mild decreases in haemoglobin, haematocrit, and white blood cell count observed in early therapy and typically stabilise during long-term use. Thrombocytopenia and agranulocytosis reported rarely. -
Creatine Kinase (CK)
If muscle symptoms develop
Trigger-based Assess CK promptly in patients reporting unexplained muscle pain, tenderness, or weakness, particularly if accompanied by malaise or fever. Discontinue if markedly elevated or myopathy/myositis is diagnosed. -
PT / INR
Frequently when co-prescribed with warfarin
Trigger-based Fenofibrate potentiates the anticoagulant effect of coumarins. Monitor INR frequently at initiation, dose changes, and until stable. Warfarin dose reduction is usually necessary.
Contraindications & Cautions
Absolute Contraindications
- Severe renal impairment including patients receiving dialysis — 2.7-fold increase in fenofibric acid exposure with increased accumulation (FDA PI)
- Active liver disease including primary biliary cirrhosis and unexplained persistent liver function abnormalities
- Pre-existing gallbladder disease — fenofibrate increases biliary cholesterol excretion
- Known hypersensitivity to fenofibrate or fenofibric acid
- Breastfeeding — contraindicated during nursing
Relative Contraindications (Specialist Input Recommended)
- Concomitant statin therapy — requires documented risk-benefit assessment, particularly in elderly patients and those with diabetes, renal insufficiency, or hypothyroidism; fenofibrate is preferred over gemfibrozil if combination is necessary
- Concomitant anticoagulant therapy — requires close INR monitoring and warfarin dose adjustment
- Concomitant immunosuppressant use (cyclosporine, tacrolimus) — additive nephrotoxicity risk; lowest effective dose and renal monitoring required
- Pregnancy — may cause fetal harm based on mechanism of action; use only if potential benefit justifies the risk; safety not established in pregnant women
Use with Caution
- Mild to moderate renal impairment (CrCl 30-80 mL/min) — initiate at reduced dose (48 mg TriCor); monitor renal function
- Elderly patients — increased risk for myopathy, renal impairment; dose selection based on renal function
- History of prior photosensitivity reaction to ketoprofen — cross-reactivity photosensitivity reported
- Concomitant colchicine use — myopathy and rhabdomyolysis reported with this combination
- Patients with hypothyroidism — increased myopathy risk and secondary cause of dyslipidemia; optimise thyroid function first
Fenofibrate was not shown to reduce coronary heart disease morbidity and mortality in a large, randomised controlled trial of patients with type 2 diabetes mellitus (FIELD trial, n=9795; ACCORD Lipid trial, n=5518). The FIELD trial showed a non-significant 11% relative reduction in CHD events (HR 0.89, 95% CI 0.75-1.05, p=0.16), and a non-significant 11% increase in total mortality (HR 1.11, 95% CI 0.95-1.29). ACCORD Lipid showed a non-significant 8% relative risk reduction for MACE with fenofibrate added to statin (HR 0.92, 95% CI 0.79-1.08, p=0.32). In addition, the FDA withdrew approval of the co-administration indication with statins in 2016, concluding that fenofibrate-induced changes in TG and HDL-C in statin-treated patients no longer demonstrated a reduction in cardiovascular events.
Patient Counselling
Purpose of Therapy
Fenofibrate is a lipid-lowering medication prescribed to reduce elevated triglycerides and cholesterol levels in the blood. It works alongside diet and lifestyle changes — it is not a substitute for them. The goal is to reduce the risk of pancreatitis from very high triglycerides, improve overall lipid profile, and address atherogenic dyslipidemia. Patients should continue dietary modifications, regular exercise, and weight management throughout therapy.
How to Take
TriCor tablets should be taken once daily. The TriCor formulation can be taken with or without food. For other fenofibrate formulations, food may be required for adequate absorption — patients should follow the instructions specific to their product. If a dose is missed, skip it and resume with the next scheduled dose; do not double the dose. The medication should be swallowed whole.
Sources
- TriCor (fenofibrate) tablets — Full Prescribing Information. AbbVie Inc. Revised 11/2018. FDA Label Primary source for all dosing, indications, contraindications, adverse reactions data, and pharmacokinetic parameters cited in this monograph.
- Fenofibrate Capsules (micronized) — Full Prescribing Information. Sun Pharmaceutical Industries. Revised August 2024. DailyMed Provides updated labeling language for hypersensitivity reactions (DRESS, SJS/TEN) and pregnancy/lactation counselling.
- Triglide (fenofibrate) tablets — Full Prescribing Information. Shionogi Inc. Revised 2013. FDA Label Alternative formulation label providing cross-reference for dose equivalence and renal dosing guidance.
- The FIELD Study Investigators. Effects of long-term fenofibrate therapy on cardiovascular events in 9795 people with type 2 diabetes mellitus (the FIELD study): randomised controlled trial. Lancet. 2005;366(9500):1849-1861. doi:10.1016/S0140-6736(05)67667-2 Landmark trial (n=9795) demonstrating non-significant 11% reduction in CHD events with fenofibrate monotherapy in type 2 diabetes; source for VTE signal data.
- ACCORD Study Group. Effects of combination lipid therapy in type 2 diabetes mellitus. N Engl J Med. 2010;362(17):1563-1574. doi:10.1056/NEJMoa1001282 ACCORD Lipid trial (n=5518) showing non-significant 8% MACE reduction with fenofibrate added to statin; gender subgroup interaction finding.
- Keech AC, Mitchell P, Summanen PA, et al. Effect of fenofibrate on the need for laser treatment for diabetic retinopathy (FIELD study): a randomised controlled trial. Lancet. 2007;370(9600):1687-1697. doi:10.1016/S0140-6736(07)61607-9 FIELD retinopathy sub-study showing fenofibrate reduced need for laser photocoagulation for diabetic retinopathy.
- ACCORD Study Group; ACCORD Eye Study Group. Effects of medical therapies on retinopathy progression in type 2 diabetes. N Engl J Med. 2010;363(3):233-244. doi:10.1056/NEJMoa1001288 ACCORD-Eye study demonstrating 40% reduction in retinopathy progression with fenofibrate plus simvastatin vs simvastatin alone.
- Wiggins BS, Saseen JJ, Page RL, et al. Recommendations for management of clinically significant drug-drug interactions with statins and select agents used in patients with cardiovascular disease: a scientific statement from the American Heart Association. Circulation. 2016;134(21):e468-e495. doi:10.1161/CIR.0000000000000456 Authoritative AHA guidance on statin-fibrate interaction management; source for rhabdomyolysis reporting rates comparing fenofibrate and gemfibrozil.
- Grundy SM, Stone NJ, Bailey AL, et al. 2018 AHA/ACC/AACVPR/AAPA/ABC/ACPM/ADA/AGS/APhA/ASPC/NLA/PCNA Guideline on the Management of Blood Cholesterol. Circulation. 2019;139(25):e1082-e1143. doi:10.1161/CIR.0000000000000625 Current ACC/AHA cholesterol guideline positioning fenofibrate as second-line adjunct for persistent hypertriglyceridemia despite statin therapy.
- Staels B, Dallongeville J, Auwerx J, Schoonjans K, Leitersdorf E, Fruchart JC. Mechanism of action of fibrates on lipid and lipoprotein metabolism. Circulation. 1998;98(19):2088-2093. doi:10.1161/01.CIR.98.19.2088 Foundational review of PPARα-mediated mechanisms underlying fibrate effects on triglyceride metabolism, LDL particle size, and HDL synthesis.
- Balfour JA, McTavish D, Heel RC. Fenofibrate: a review of its pharmacodynamic and pharmacokinetic properties and therapeutic use in dyslipidaemia. Drugs. 1990;40(2):260-290. doi:10.2165/00003495-199040020-00007 Comprehensive pharmacokinetic review providing absorption, distribution, metabolism, and elimination data for fenofibrate formulations.
- Guay DRP. Micronized fenofibrate: a new fibric acid hypolipidemic agent. Ann Pharmacother. 1999;33(10):1083-1103. doi:10.1345/aph.18414 Detailed comparison of micronized vs non-micronized fenofibrate formulations including bioequivalence data and dose conversion tables.
- Hottelart C, El Esper N, Rose F, Achard JM, Fournier A. Fenofibrate increases creatininemia by increasing metabolic production of creatinine. Nephron. 2002;92(3):536-541. doi:10.1159/000064083 Mechanistic study demonstrating that fenofibrate-induced serum creatinine rises reflect increased creatinine production rather than impaired renal function.