Expert-ranked · Third-party tested only
Best Omega-3 for Heart Health
IFOS (International Fish Oil Standards) 5-Star certification is the gold standard for fish oil purity. It tests for oxidation, heavy metals, PCBs, and dioxins at levels stricter than any government standard.
Quick answer
Nordic Naturals Ultimate Omega is the best omega-3 for heart health in 2026. It's IFOS 5-Star certified (highest purity rating) and USP verified, providing 1280mg EPA+DHA per serving from sustainably sourced fish. Health Score: 92, Trust Score: 95.
Buying guide
What to look for
- IFOS 5-Star certification — highest purity standard for fish oil
- 1000mg+ combined EPA+DHA per serving (not just total fish oil)
- Triglyceride form — better absorption than ethyl ester form
- Wild-caught, sustainably sourced (look for FOS or MSC certification)
- Low oxidation values — fresh oil won't have fishy burps
Best heart health, brain function, and inflammation
Our picks
Common questions
FAQ
How much omega-3 should I take daily?
The American Heart Association recommends 1g (1000mg) of EPA+DHA daily for heart health. For inflammation or high triglycerides, studies use 2-4g daily under medical supervision.
What's the difference between EPA and DHA?
EPA is more anti-inflammatory and benefits mood/depression. DHA is critical for brain structure and cognitive function. Both are important — look for supplements with a balanced ratio.
Is krill oil better than fish oil?
Krill oil has better absorption per mg due to phospholipid form, but delivers much less EPA/DHA per serving. Fish oil is more cost-effective for reaching therapeutic doses. Both work.
Related guides