What it is
Regulatory status: dietary supplement nutrient; purified icosapent ethyl is a prescription drug for specific indications
Mechanism evidence: human
At a glance
What it is, why people use it, the evidence, and what to know before trying it.
Why people use it
- Triglyceride reduction
- Cardiovascular risk reduction in selected high-risk patients
- Omega-3 intake
Evidence at a glance
EPA has established triglyceride-lowering effects, and 4 g/day prescription icosapent ethyl reduced cardiovascular events in a selected high-risk population. A personal 1–2 g fish-oil EPA routine is a different formulation and dose and should not inherit that outcome claim.
Confidence: strong
Safety & interactions
Known side effects, interactions and use limits from reviewed sources.
EPA products can cause gastrointestinal symptoms and may increase bleeding tendency. High-dose prescription icosapent ethyl increased atrial-fibrillation hospitalization and bleeding in REDUCE-IT; contaminants and oxidation vary in supplements.
- Fish or shellfish allergy depending on source
- Upcoming surgery without medication review
- Gastrointestinal upset
- Fishy aftertaste
- Bleeding
- Atrial fibrillation risk at high prescription dose
- Anticoagulants and antiplatelet medicines
Forms and variants
This review does not automatically apply to:
- icosapent ethyl assumed equivalent to fish oil