What is Icosapent ethyl used for?

Icosapent ethyl is used as an addition to a healthy diet to help lower high triglyceride levels in adults.

Can I crush Icosapent ethyl capsules?

No, you should swallow Icosapent ethyl capsules whole and should not crush, chew, or break them open.

Does Icosapent ethyl cause irregular heartbeats?

Yes, Icosapent ethyl has been linked to an increased risk of atrial fibrillation or atrial flutter.

What should I do if I have a fish allergy?

Since Icosapent ethyl is made from fish oil, tell your doctor if you have a fish or shellfish allergy and seek medical help if you have a reaction.

Will Icosapent ethyl increase my risk of bleeding?

Yes, there is an increased risk of bleeding, especially if you take other blood-thinning medications.

Is Icosapent ethyl safe to take with aspirin?

Taking Icosapent ethyl with aspirin may increase your risk of bleeding, so your doctor should monitor you.

Can I take Icosapent ethyl if I am pregnant?

There is not enough information to confirm if Icosapent ethyl is safe during pregnancy.

Icosapent Ethyl | CAS 86227-47-6 | SSQPWTVBQMWLSZ

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Lipid-regulating agent

Icosapent ethyl (brand name Vascepa) is a prescription medication used alongside diet to lower very high triglyceride levels in adults. It is a concentrated form of omega-3 fatty acid obtained from fish oil.

How it worksIcosapent ethyl helps lower triglycerides by reducing how much the liver produces them and helping the body clear them from the blood more effectively.

Brand names:VASCEPA

Used for

Reducing triglyceride levels in adults with severe (500 mg/dL or higher) hypertriglyceridemia

Conditions

Severe hypertriglyceridemia

Class

Lipid-regulating agentOmega-3 fatty acidCardiovascularMetabolic

How to take

Forms1 gram soft gelatin capsule

RoutesOral

The standard dose is 4 grams per day, taken as two 1 gram capsules twice daily with food.

You should swallow the capsules whole. Do not crush, chew, break open, or dissolve them.

Key warnings

·There is an increased risk of atrial fibrillation or atrial flutter, which may require hospital care.
·People with a history of atrial fibrillation or flutter may be at higher risk.
·Because this comes from fish oil, people with fish or shellfish allergies should be cautious and watch for reactions.
·This medication may increase the risk of bleeding, especially if you are already taking blood thinners like aspirin, clopidogrel, or warfarin.

Do not use if

·Do not use if you have a known allergy to Icosapent ethyl or any of its ingredients.

Side effects

Common

Muscle or joint painSwelling in the hands or feet (peripheral edema)ConstipationGoutIrregular heartbeat (atrial fibrillation)Joint painThroat pain

Serious

·Increased risk of atrial fibrillation or atrial flutter (irregular heartbeat)
·Increased risk of bleeding
·Potential allergic reactions (especially if you have a fish allergy)

Seek help if

·Allergic reaction
·Irregular heartbeat
·Excessive bleeding

Interactions

·Blood thinners (anticoagulants and antiplatelet agents) like aspirin, clopidogrel, or warfarin may increase your risk of bleeding.

FoodTake Icosapent ethyl capsules with or after a meal.

Special populations

PregnancyThere is not enough data to know if Icosapent ethyl is safe for pregnant women or if it causes major birth defects. Animal studies showed some minor issues, but results were not clearly linked to human risks.

BreastfeedingOmega-3 fatty acids can pass into breast milk. There is no specific data on how this medication affects nursing infants, so the benefits of breastfeeding should be weighed against the mother's need for the drug.

PediatricThe safety and effectiveness of Icosapent ethyl in children have not been established.

GeriatricIcosapent ethyl has been used in older adults (65+) in clinical studies, and no specific differences in safety or effectiveness were found compared to younger people.

Talk to your doctor

Monitor

·Signs of bleeding
·Heart rhythm (atrial fibrillation)
·Triglyceride levels

Questions to ask

·Should I stop my aspirin while taking Icosapent ethyl?
·Is it safe for me given my history of irregular heartbeat?
·How will my fish allergy affect my ability to take this?

Pharmacokinetics

OnsetPeak plasma concentrations reached approximately 5 hours after oral dose.

MetabolismIcosapent ethyl is de-esterified during absorption into the active metabolite EPA.

Practical

StorageStore between 20°C to 25°C (68°F to 77°F).

Ingredients

Allergens

fish

Inactive

gelatinglycerinpurified watertocopherolammonium hydroxidepropylene glycolshellacsimethiconetitanium dioxidesilicon dioxide

Educational summary derived from FDA labeling, AI-assisted. Not medical advice — consult a healthcare professional. Updated 2026-04-25.