A purified fish-oil (EPA) capsule
Icosapent ethyl
A purified fish-oil (EPA) capsule used to reduce cardiovascular risk in people with high triglycerides who are already on a statin.
What is Icosapent ethyl?
Icosapent ethyl is a purified form of an omega-3 fish oil called EPA, taken as a capsule. It is used to lower the risk of heart attacks and strokes in people who have high triglycerides (a type of blood fat) and are already taking a statin, often with other risk factors. It is not the same as ordinary fish-oil supplements. It can slightly increase the risk of an irregular heartbeat (atrial fibrillation) and of bleeding. In the UK it is sold as Vazkepa.
Education and reference only. This is a plain-language guide to Icosapent ethyl — it deliberately contains no doses. Doses depend on the person, the brand and the reason for treatment, and belong with your prescriber. Always check the BNF, the product labelling (SmPC) and follow medical advice.
What it is
Icosapent ethyl is a prescription medicine made from a highly purified omega-3 called EPA (eicosapentaenoic acid). It is taken as a capsule to reduce the risk of cardiovascular events such as heart attack and stroke. It is used specifically in people who have raised triglycerides and are already on a statin, usually with other heart risk factors. It is important to know it is a regulated medicine, not the same as the fish-oil supplements sold in shops.
How it works
Icosapent ethyl provides a purified omega-3 (EPA) that helps lower triglycerides and is thought to have additional effects on the blood vessels and on inflammation that together reduce cardiovascular risk. It is used on top of a statin, because statins mainly lower LDL cholesterol while this targets the extra risk linked to high triglycerides. The benefit builds up over the long term, so it is taken steadily rather than for any immediate effect.
Company & origin
Originated / developed by: Amarin.
A purified omega-3 (EPA) medicine used in the UK to cut cardiovascular risk in certain people who already take a statin.
What it treats
Conditions Icosapent ethyl is used for
Practical use
How to take Icosapent ethyl
General, dose-free guidance — always follow your prescriber's and the leaflet's specific instructions.
- Take the capsules as prescribed, usually with food, and swallow them whole without crushing or chewing.
- Keep taking your statin and other heart medicines alongside it unless told otherwise.
- Report any new palpitations, a fluttering heartbeat or breathlessness, as it can slightly raise the risk of an irregular heartbeat.
- Tell your prescriber if you bruise or bleed easily, especially if you also take blood-thinning medicines.
- Let your prescriber know if you have a fish or shellfish allergy before starting.
Weighing it up
Advantages & disadvantages of Icosapent ethyl
Advantages
- Reduces cardiovascular risk in people with high triglycerides who are already on a statin.
- A purified, regulated medicine rather than a variable fish-oil supplement.
- Adds protection on top of statins by targeting risk linked to high triglycerides.
Disadvantages
- Can slightly increase the risk of an irregular heartbeat (atrial fibrillation).
- Can increase the risk of bleeding, particularly with blood-thinning medicines.
- Only suitable for a specific group of people and does not make you feel any different.
Practical use
Good to know
Icosapent ethyl is a specific medicine for a specific situation: people with high triglycerides who are already on a statin and at increased cardiovascular risk. It is not the same as over-the-counter fish-oil capsules and should not be swapped for them. Two cautions are worth knowing: it can slightly raise the risk of an irregular heartbeat called atrial fibrillation, so report any new palpitations or fluttering, and it can increase the risk of bleeding, which matters especially if you also take blood-thinning medicines. If you have a fish or shellfish allergy, tell your prescriber. As with other heart-protective medicines, it works alongside a healthy diet, activity and not smoking, and the gain is long-term risk reduction rather than feeling different.
Who should not take it / use with caution
- Anyone who has had an allergic reaction to the medicine itself must not take it; tell your prescriber if you have a fish or shellfish allergy.
- It is used carefully in people at higher risk of an irregular heartbeat or of bleeding.
- It should be used cautiously in pregnancy or breastfeeding, only if clearly needed.
Monitoring
- Reviewing triglyceride levels and overall heart risk.
- Watching for any signs of an irregular heartbeat or of bleeding.
- Checking that the statin and other treatments are continued.
Side effects
- An irregular heartbeat (atrial fibrillation) may become slightly more likely.
- Increased risk of bruising or bleeding in some people.
- Tummy upset, joint or limb pain, and swelling of the hands or feet.
Key interactions
- Care is needed with blood-thinning or antiplatelet medicines because of the added bleeding risk.
- Tell your prescriber about all your medicines, including other heart treatments.
- It is designed to be used together with a statin rather than instead of one.
Available as: Capsules taken by mouth.
Answers
Icosapent ethyl: frequently asked questions
Is this the same as fish-oil supplements from the shop?
No. Icosapent ethyl is a highly purified, regulated medicine, not the same as ordinary over-the-counter fish-oil capsules, and the two should not be swapped.
Who is it for?
It is used to cut cardiovascular risk in people who have high triglycerides and are already taking a statin, usually with other heart risk factors.
Can it affect my heartbeat?
It can slightly increase the risk of an irregular heartbeat called atrial fibrillation, so report any new palpitations, fluttering or breathlessness.
Does it increase bleeding risk?
Yes, it can increase the risk of bleeding, which matters especially if you also take blood-thinning medicines, so tell your prescriber what you take.
Should I keep taking my statin?
Yes. It is meant to be used alongside a statin, not instead of one, so continue your statin unless told otherwise.
Authoritative sources
- BNF
- NICE CKS
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