Swanson · Omega-3 · Capsules
Is Swanson Super EPA underdosed?
Verdict
500 mg a dayas the label directs · studies use 1000–6000 mg/day of EPA + DHA
Below research doseTaken as the label directs (1 serving a day, 500 mg each), it gives 500 mg a day; studies use 1000–6000 mg/day. EPA + DHA builds up in the body through daily use over weeks; a lower daily amount still builds up, just more slowly.
One capsule gives 500 mg, so reaching the low end of what studies use (1 g) takes 2 capsules a day; it ranks 16th of 21 omega-3 supplements here by dose.
To reach the research dose. It would take 2 capsules a day (1 g) to reach the 1 g studies use, more than the label's directions, which allow 1 capsule a day (1 serving a day).
Wondering about your omega-3 index? What it takes to raise it, and why EPA and DHA count.
What the label says
- EPA + DHA per serving
- 500 mg in 1 capsule
- Servings a day
- 1 serving a day
- EPA + DHA a day, as directed
- 500 mg
- Research dose
- 1000–6000 mg/day Evidence: Moderate
Suggested use: As a dietary supplement, take one softgel per day with food and water.
Also on the label
| Ingredient | Per serving | Verdict |
|---|---|---|
| EPA | 300 mg | Not graded |
| DHA | 200 mg | Not graded |
| Other Omega-3 Fatty Acid Ethyl Ester | 50 mg | Not graded |
More about EPA + DHA: forms, timing and the studies behind the dose.
Same category, compared
All 21 omega-3 supplements we checked, ranked by dose (commission never changes the order). Studies use 1000–6000 mg/day of EPA + DHA; servings counted to 1 g.
Where the reference doses come from
- EPA + DHA, 1000–6000 mg/day: Gonzalez et al., 2026; Maughan et al., 2018.
- Label data: National Institutes of Health, Office of Dietary Supplements. Dietary Supplement Label Database, 2026. https://dsld.od.nih.gov/. Label 337723, including its servings a day.
For a supplement taken every day we judge the most the label's directions give in a day, and show the least. Read the full methodology or the corrections log.