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Omega-3-Acid Ethyl Ester

Generic: omega-3-acid ethyl esters

Verified·Apr 23, 2026
Manufacturer
GlaxoSmithKline
NDC
63629-2448
RxCUI
577208
Route
ORAL
ICD-10 indication
E78.1

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About Omega-3-Acid Ethyl Ester

What is this medication? Omega-3-acid ethyl esters are a type of prescription medication used to lower very high levels of triglycerides in adults. Triglycerides are a type of fat found in the blood that, when elevated to extreme levels, can increase the risk of developing inflammation of the pancreas. This medication contains a concentrated mixture of omega-3 fatty acids, primarily eicosapentaenoic acid and docosahexaenoic acid, which are derived from fish oils. This drug works by reducing the amount of triglycerides the liver produces while helping the body clear existing fats more effectively. It is typically prescribed as an addition to a heart-healthy diet and exercise program rather than as a standalone treatment. While it effectively targets triglyceride levels, it is not meant to replace other cholesterol-lowering medications or to treat general heart disease without professional medical guidance.

Copay & patient assistance

  • Patient Copay Amount: As little as $5.00
  • Maximum Annual Benefit Limit: Not Publicly Available (Maximum savings of up to $75.00 per fill/30-day supply)
  • Core Eligibility Restrictions: Valid for commercially insured patients with a valid prescription for brand-name LOVAZA; not valid for patients enrolled in Medicare, Medicaid, TRICARE, or any other state or federal healthcare program; void in CA and MA; benefit limited to one use per person for any 30-day period.
  • RxBIN, PCN, and Group numbers: BIN: 610600, PCN: AS, Group: 359

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Prescribing information

From the FDA-approved label for Omega-3-Acid Ethyl Ester. Official source: DailyMed (NLM) · Label effective Nov 10, 2021

Indications and usage
1 INDICATIONS AND USAGE Omega-3-acid ethyl esters capsules are indicated as an adjunct to diet to reduce triglyceride (TG) levels in adult patients with severe (greater than or equal to 500 mg/dL) hypertriglyceridemia. Usage Considerations: Patients should be placed on an appropriate lipid-lowering diet before receiving omega-3-acid ethyl esters capsules and should continue this diet during treatment with omega-3-acid ethyl esters capsules. Laboratory studies should be done to ascertain that the lipid levels are consistently abnormal before instituting therapy with omega-3-acid ethyl esters capsules. Every attempt should be made to control serum lipids with appropriate diet, exercise, weight loss in obese patients, and control of any medical problems such as diabetes mellitus and hypothyroidism that are contributing to the lipid abnormalities. Medications known to exacerbate hypertriglyceridemia (such as beta blockers, thiazides, estrogens) should be discontinued or changed, if possible, prior to consideration of TG-lowering drug therapy. Limitations of Use: The effect of omega-3-acid ethyl esters capsules on the risk for pancreatitis has not been determined. The effect of omega-3-acid ethyl esters capsules on cardiovascular mortality and morbidity has not been determined. Omega-3-acid ethyl esters is a combination of ethyl esters of omega 3 fatty acids, principally eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), indicated as an adjunct to diet to reduce triglyceride (TG) levels in adult patients with severe (≥ 500 mg/dL) hypertriglyceridemia. ( 1 ) Limitations of Use: The effect of omega-3-acid ethyl esters on the risk for pancreatitis has not been determined. ( 1 ) The effect of omega-3-acid ethyl esters on cardiovascular mortality and morbidity has not been determined. ( 1 )
Dosage and administration
2 DOSAGE AND ADMINISTRATION Assess TG levels carefully before initiating therapy. Identify other causes (e.g., diabetes mellitus, hypothyroidism, medications) of high TG levels and manage as appropriate [see Indications and Usage ( 1 )]. Patients should be placed on an appropriate lipid-lowering diet before receiving omega‑3‑acid ethyl esters capsules and should continue this diet during treatment with omega-3-acid ethyl esters capsules. In clinical studies, omega-3-acid ethyl esters capsules were administered with meals. The daily dose of omega-3-acid ethyl esters capsules is 4 grams per day. The daily dose may be taken as a single 4 gram dose (4 capsules) or as two 2 gram doses (2 capsules given twice daily). Patients should be advised to swallow omega-3-acid ethyl esters capsules whole. Do not break open, crush, dissolve, or chew omega-3-acid ethyl esters capsules. The daily dose of omega-3-acid ethyl esters is 4 grams per day taken as a single 4 gram dose (4 capsules) or as two 2 gram doses (2 capsules given twice daily). ( 2 ) Patients should be advised to swallow omega-3-acid ethyl esters capsules whole. Do not break open, crush, dissolve, or chew omega-3-acid ethyl esters capsules. ( 2 )
Contraindications
4 CONTRAINDICATIONS Omega-3-acid ethyl esters are contraindicated in patients with known hypersensitivity (e.g., anaphylactic reaction) to omega-3-acid ethyl esters or any of its components. Omega-3-acid ethyl esters is contraindicated in patients with known hypersensitivity (e.g., anaphylactic reaction) to omega-3-acid ethyl esters or any of its components.
Warnings and precautions
5 WARNINGS AND PRECAUTIONS In patients with hepatic impairment, monitor ALT and AST levels periodically during therapy. ( 5.1 ) Omega-3-acid ethyl esters may increase levels of low-density lipoprotein (LDL). Monitor LDL levels periodically during therapy. ( 5.1 ) Use with caution in patients with known hypersensitivity to fish and/or shellfish. ( 5.2 ) There is a possible association between omega-3-acid ethyl esters and more frequent recurrences of symptomatic atrial fibrillation or flutter in patients with paroxysmal or persistent atrial fibrillation, particularly within the first months of initiating therapy. ( 5.3 ) 5.1 Monitoring: Laboratory Tests In patients with hepatic impairment, alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels should be monitored periodically during therapy with omega‑3‑acid ethyl esters. In some patients, increases in ALT levels without a concurrent increase in AST levels were observed. In some patients, omega-3-acid ethyl esters increases low-density lipoprotein cholesterol (LDL-C) levels. LDL-C levels should be monitored periodically during therapy with omega-3-acid ethyl esters. Laboratory studies should be performed periodically to measure the patient’s TG levels during therapy with omega-3-acid ethyl esters. 5.2 Fish Allergy Omega-3-acid ethyl esters capsules contain ethyl esters of omega-3 fatty acids (EPA and DHA) obtained from the oil of several fish sources. It is not known whether patients with allergies to fish and/or shellfish, are at increased risk of an allergic reaction to omega-3-acid ethyl esters. Omega-3-acid ethyl esters should be used with caution in patients with known hypersensitivity to fish and/or shellfish. 5.3 Recurrent Atrial Fibrillation (AF) or Flutter In a double-blind, placebo-controlled trial of 663 subjects with symptomatic paroxysmal AF (n = 542) or persistent AF (n = 121), recurrent AF or flutter was observed in subjects randomized to omega-3-acid ethyl esters who received 8 grams/day for 7 days and 4 grams/day thereafter for 23 weeks at a higher rate relative to placebo. Subjects in this trial had median baseline TG levels of 127 mg/dL, had no substantial structural heart disease, were taking no anti-arrhythmic therapy (rate control permitted), and were in normal sinus rhythm at baseline. At 24 weeks, in the paroxysmal AF stratum, there were 129 (47%) first recurrent symptomatic AF or flutter events on placebo and 141 (53%) on omega-3-acid ethyl esters (primary endpoint, HR: 1.19; 95% CI: 0.93, 1.35). In the persistent AF stratum, there were 19 (35%) events on placebo and 34 (52%) events on omega-3-acid ethyl esters (HR: 1.63; 95% CI: 0.91, 2.18). For both strata combined, the HR was 1.25; 95% CI: 1.00, 1.40. Although the clinical significance of these results is uncertain, there is a possible association between omega-3-acid ethyl esters and more frequent recurrences of symptomatic AF or flutter in patients with paroxysmal or persistent AF, particularly within the first 2 to 3 months of initiating therapy. Omega-3-acid ethyl esters are not indicated for the treatment of AF or flutter.
Drug interactions
7 DRUG INTERACTIONS Omega-3-acids may prolong bleeding time. Patients taking omega-3-acid ethyl esters and an anticoagulant or other drug affecting coagulation (e.g., anti-platelet agents) should be monitored periodically. ( 7.1 ) 7.1 Anticoagulants or Other Drugs Affecting Coagulation Some trials with omega-3-acids demonstrated prolongation of bleeding time. The prolongation of bleeding time reported in these trials has not exceeded normal limits and did not produce clinically significant bleeding episodes. Clinical trials have not been done to thoroughly examine the effect of omega-3-acid ethyl esters and concomitant anticoagulants. Patients receiving treatment with omega-3-acid ethyl esters and an anticoagulant or other drug affecting coagulation (e.g., anti-platelet agents) should be monitored periodically.
Adverse reactions
6 ADVERSE REACTIONS The most common adverse reactions (incidence > 3% and greater than placebo) were eructation, dyspepsia, and taste perversion. To report SUSPECTED ADVERSE REACTIONS, contact Bionpharma Inc. at 1-888-235-BION or 1-888-235-2466 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared with rates in the clinical trials of another drug and may not reflect the rates observed in practice. Adverse reactions reported in at least 3% of subjects treated with omega-3-acid ethyl esters and at a greater rate than placebo based on pooled data across 23 clinical trials are listed in Table 1. Table 1. Adverse Reactions Occurring at Incidence ≥ 3% and Greater than Placebo in Clinical Trials of Omega-3-Acid Ethyl Esters Adverse Reaction Trials included subjects with hypertriglyceridemia and severe hypertriglyceridemia. Omega-3-Acid Ethyl Esters (n = 655) Placebo (n = 370) n % n % Eructation 29 4 5 1 Dyspepsia 22 3 6 2 Taste perversion 27 4 1 < 1 Additional adverse reactions from clinical trials are listed below: Digestive System Constipation, gastrointestinal disorder, and vomiting. Metabolic and Nutritional Disorders Increased ALT and increased AST. Skin Pruritus and rash. 6.2 Postmarketing Experience In addition to adverse reactions reported from clinical trials, the events described below have been identified during post-approval use of omega-3-acid ethyl esters. Because these events are reported voluntarily from a population of unknown size, it is not possible to reliably estimate their frequency or to always establish a causal relationship to drug exposure. The following events have been reported: anaphylactic reaction, hemorrhagic diathesis, urticaria.
Use in pregnancy
8.1 Pregnancy Risk Summary The available data from published case reports and the pharmacovigilance database on the use of omega-3-acid ethyl esters in pregnant women are insufficient to identify a drug-associated risk for major birth defects, miscarriage, or adverse maternal or fetal outcomes. In animal studies, omega-3-acid ethyl esters given orally to female rats prior to mating through lactation did not have adverse effects on reproduction or development when given at doses 5 times the maximum recommended human dose (MRHD) of 4 grams/day, based on a body surface area comparison. Omega-3-acid ethyl esters given orally to rats and rabbits during organogenesis was not teratogenic at clinically relevant exposures, based on body surface area comparison (see Data) . The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Data Animal Data : In female rats given oral doses of omega-3-acid ethyl esters (100 mg/kg/day, 600 mg/kg/day, or 2,000 mg/kg/day) beginning 2 weeks prior to mating through lactation, no adverse effects were observed at 2,000 mg/kg/day (5 times the MRHD based on body surface area [mg/m 2 ]). In a dose-ranging study, female rats given oral doses of omega-3-acid ethyl esters (1,000 mg/kg/day, 3,000 mg/kg/day, or 6,000 mg/kg/day) beginning 2 weeks prior to mating through Postpartum Day 7 had decreased live births (20% reduction) and pup survival to Postnatal Day 4 (40% reduction) at or greater than 3,000 mg/kg/day in the absence of maternal toxicity at 3,000 mg/kg/day (7 times the MRHD based on body surface area [mg/m 2 ]). In pregnant rats given oral doses of omega-3-acid ethyl esters (1,000 mg/kg/day, 3,000 mg/kg/day, or 6,000 mg/kg/day) during organogenesis, no adverse effects were observed in fetuses at a maternally toxic dose (increased food consumption) of 6,000 mg/kg/day (14 times the MRHD based on body surface area [mg/m 2 ]). In pregnant rats given oral doses of omega-3-acid ethyl esters (100 mg/kg/day, 600 mg/kg/day, or 2,000 mg/kg/day) from Gestation Day 14 through Lactation Day 21, no adverse effects were observed at 2,000 mg/kg/day (5 times the MRHD based on body surface area [mg/m 2 ]). In pregnant rabbits given oral doses of omega-3-acid ethyl esters (375 mg/kg/day, 750 mg/kg/day, or 1,500 mg/kg/day) during organogenesis, no adverse effects were observed in fetuses given 375 mg/kg/day (2 times the MRHD based on body surface area [mg/m 2 ]). However, at higher doses, increases in fetal skeletal variations and reduced fetal growth were evident at maternally toxic doses (reduced food consumption and body weight gain) greater than or equal to 750 mg/kg/day (4 times the MRHD), and embryolethality was evident at 1,500 mg/kg/day (7 times the MRHD).

Label text is reproduced as-is from the FDA-approved label. We do not paraphrase, summarize, or omit. Content above is for informational purposes only and is not medical advice. Always consult your prescribing clinician or pharmacist before making decisions about your medication.

Conditions we've indexed resources for

Click a condition to see copay cards, grants, and PA rules specific to it. For the full list of FDA-approved indications, see Prescribing information above.

Medicare Part D coverage

How Omega-3-Acid Ethyl Ester appears across Medicare Part D plan formularies nationally. Source: CMS monthly Prescription Drug Plan file (2026-04-30).

Covered by plans

67%

3,692 of 5,509 plans

Most common tier

Tier 2

On 35% of covering formularies

Prior authorization required

16%

of covering formularies

TierFormularies on this tierShare
Tier 1 (preferred generic)66
21%
Tier 2 (generic)113
35%
Tier 3 (preferred brand)109
34%
Tier 4 (non-preferred brand)33
10%

Step therapy: 15% of formularies

Quantity limits: 40% of formularies

Coverage breadth: 321 of 65 formularies

How to read this:plans on the same formulary share tier + PA rules. Your specific plan's copay depends on (a) the tier above, (b) your plan's cost-share for that tier, (c) whether you're in the initial coverage phase or past the 2026 $2,000 out-of-pocket cap. For your exact plan, check its Summary of Benefits or log in to your Medicare.gov account. Copay cards don't apply to Medicare (federal law).

Prior authorization & coverage

PayerPAStep therapyCopay tier

Medicare Part D

Related drugs

How this page is sourced

  • Drug identity verified against openFDA NDC Directory.
  • Label text (when shown) originates from NLM DailyMed.
  • Copay and assistance URLs verified periodically; if you hit a broken link, tell us.