Omega-3 Fatty Acids (EPA/DHA)
Essential fatty acids that research suggests may support cardiovascular health, brain function, and reduce inflammation throughout the body.
Human Trials
85
156,000 participants
Risk Level
Monthly Cost
Varies by EPA/DHA concentration and quality
Quick Facts
- Category
- Supplement
- Research Field
- Supplements
- Evidence Grade
- B+ – Good
- Risk Level
- Low
- Monthly Cost
- $15 – $60
- Human Trials
- 85
Typical Dose
1–2 g combined EPA+DHA per day
Range
0.5–4 g EPA+DHA/day
For informational purposes only – not medical advice. See disclaimer
Research Velocity
Mechanism of Action
EPA and DHA are incorporated into cell membranes where they influence membrane fluidity and cellular signaling. Studies indicate they modulate inflammatory pathways by reducing pro-inflammatory cytokines and increasing specialized pro-resolving mediators. Research suggests they may also support neurotransmitter function and cardiovascular health through effects on blood pressure, triglycerides, and endothelial function.
Overview
Omega-3 fatty acids EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) are essential polyunsaturated fats primarily found in marine sources. Research indicates these compounds play crucial roles in cardiovascular health, with studies suggesting they may help reduce triglyceride levels, support healthy blood pressure, and decrease inflammation markers. Large-scale trials like the VITAL study have shown mixed but generally positive results for cardiovascular protection, particularly in populations with lower baseline omega-3 intake.
Studies suggest omega-3s may also support brain health and cognitive function throughout the lifespan. Research indicates DHA is particularly concentrated in brain tissue and may help maintain neuronal membrane integrity and support neurotransmitter function. Some trials have shown potential benefits for mood regulation and cognitive decline in aging populations, though results vary based on dosage, duration, and participant characteristics.
The research profile for omega-3 supplementation is extensive, with decades of human trials examining various health outcomes. While not all studies show uniform benefits, the overall evidence suggests omega-3 supplementation may be particularly beneficial for individuals with low dietary fish intake, elevated triglycerides, or inflammatory conditions. Quality and bioavailability can vary significantly between products, with factors like EPA/DHA ratio, molecular form, and purity affecting research outcomes.
Known Interactions
- May increase bleeding risk when combined with anticoagulant medications like warfarin
- Can enhance the effects of blood pressure medications
- May interact with immunosuppressive drugs by modulating immune function
- High doses may affect blood sugar control in diabetic patients
Legal Status by Country
Your country (United States)
Available without prescription in:
Australia, Brazil, Canada, China, Colombia, Germany, India, Israel, Japan, Mexico, Netherlands, Panama, Russia, South Korea, Switzerland, Thailand, Turkey, UAE, United Kingdom, United States
📍 = your selected country · ✈️ = medical tourism destination · Always verify current local regulations before travel.
Key Research
- 2021
Comprehensive review of cardiovascular effects
- 2019
Large meta-analysis of cardiovascular outcomes
- 2021
Meta-analysis of cognitive effects in aging
- 2019
VITAL trial - large RCT of cardiovascular prevention
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Last verified: 2026-03-16