Fats & OmegaNo.026
Omega-3 (Fish Oil)
Heart, brain, and eye health; anti-inflammatory.
Typical / RDA250–500 mg*
Upper limit~3,000 mg
EvidenceModerate
How to take it
Timing With a mealFood With fatForm EPA + DHA
What to know
*Target is combined EPA+DHA. Strongest case for people who rarely eat oily fish. Read the EPA/DHA numbers on the label, not the total fish-oil weight.
Interactions & cautions
- High doses mildly thin blood — caution with blood thinners / surgery.
Often worth it
Rarely eat salmon, sardines, or mackerel? A likely gap.
Can you take omega-3 (fish oil) with…
Questions people ask about omega-3 (fish oil)
- Is Flaxseed Oil Enough for Your Omega-3 Needs?Flaxseed oil provides ALA, a plant omega-3, but the body's conversion to active EPA and DHA is inefficient, often under 10%. It's usually not enough for full omega-3 needs.
- Multivitamin vs Omega-3: Do You Need Both?Mostly, but carefully check your multivitamin label. Many already contain Vitamin D, which can lead to stacking if you take a separate D supplement. Omega-3 is less likely to be duplicated.
- Evening Primrose vs Omega-3: Do You Need Both?Evening primrose oil and omega-3s offer different types of fatty acids, but most people don't need both. Learn why.
- Krill Oil vs Omega-3: Do You Need Both?Krill oil and fish oil both provide omega-3s, so taking both is often redundant. Focus on total EPA+DHA intake, aiming for 250–500 mg daily.
Reference values: NIH Office of Dietary Supplements, adult general population. Educational information only — not medical advice. Confirm with a healthcare professional.