Omega-3 Dosage (2026): How Much EPA and DHA a Day
The usual omega-3 dose for most adults is 250 to 500 mg of EPA and DHA a day, counting food and pills together. EPA and DHA are the two omega-3s in fish oil. Read those two lines on the label, not the big number on the front. If you are pregnant or have a health condition, ask your doctor how much.
By Erin Rose Updated October 17, 2026 How we score
How much a day
| Who | How much | Notes |
|---|---|---|
| Most adults | 250–500 mg EPA+DHA a day | EFSA’s advice for adults. Food and pills count together. |
| The most from pills | Up to 5 g of EPA+DHA a day | US and EU regulators found no safety concern up to this amount for adults. |
| Pregnant, or have a health condition | Ask your doctor | How much depends on you. Don’t take more than the label serving without advice. |
You may not need a pill. The 250 to 500 mg counts the fish you eat. The American Heart Association advises 1 to 2 seafood meals a week (2018). On fish oil pills, its 2017 advisory made no recommendation for the general public, because no trials supported one. If you have a health condition, ask your doctor whether you need omega-3 and how much. Prescription omega-3 is a different product from store fish oil.
Plant omega-3 (ALA) is a different fat. NIH sets an intake only for ALA: 1.6 g a day for men and 1.1 g for women. If you are pregnant and take cod liver oil, check its vitamin A line. With a prenatal that also has vitamin A, the total can reach a harmful amount.
How many softgels is that?
It depends on the brand. One softgel holds anywhere from 293 to 1,035 mg of EPA+DHA across the products we score, about 3.5 times as much at the top. Our pick is highlighted.
| Product | Each | 500 mg | 1 g | 2 g | Per 1,000 mg |
|---|---|---|---|---|---|
| Viva Naturals Triple Strength | 1,035 mg | 1 | 1 | 2 | $0.30 |
| Barlean’s Ideal Omega 3 | 1,000 mg | 1 | 1 | 2 | $0.97 |
| Sports Research Triple Strength | 950 mg | 1 | 2 | 3 | $0.34 |
| Momentous Omega-3 | 800 mg | 1 | 2 | 3 | $0.83 |
| NOW Ultra Omega-3 | 750 mg | 1 | 2 | 3 | $0.21 |
| Carlson Elite Omega-3 Gems | 700 mg | 1 | 2 | 3 | $0.47 |
| Thorne Super EPA | 695 mg | 1 | 2 | 3 | $0.66 |
| Puori O3 Fish Oil | 583 mg | 1 | 2 | 4 | $0.81 |
| Nature Made Fish Oil 1200 mg | 300 mg | 2 | 4 | 7 | $0.42 |
| Nordic Naturals Algae Omega | 293 mg | 2 | 4 | 7 | $1.15 |
This table is for counting softgels, not a ranking. Which ones are on a testing list: third-party tested fish oil.
Read the EPA and DHA lines, not the front
The big number on the front of a fish oil bottle is the weight of the oil, not the omega-3. We read 899 fish-oil labels in NIH’s label database. On the 516 that print both figures, the omega-3 was a median 30% of the fish oil, and on 65% it was under half. The median label gives 600 mg of omega-3 a serving, and a serving is often two softgels.
Labels can also run short. A US team tested 47 omega-3 products, and only 21% held the full EPA on the label; EPA ranged from 66% to 184% of the label. Results in other countries varied widely. Another study looked at 255 fish oils from 16 big brands: only 24 list a daily serving of 2 g or more. More in third-party tested fish oil.
What is the most you should take?
US and EU regulators found no safety concern for adults at up to 5 g of EPA plus DHA a day from supplements. You may see 3 g quoted: that is FDA’s cap for fish oil added to regular foods, not a supplement limit. Higher doses carry two cautions: heart rhythm and bleeding.
| Item | Value |
|---|---|
| Trials at 1 g a day or less | 1.12× |
| All trials | 1.25× |
| Trials above 1 g a day | 1.49× |
If you have heart disease or atrial fibrillation, ask your doctor before taking fish oil at any dose.
On bleeding, pooled trials of 120,643 people found no clear rise in serious bleeding. In other studies, 3 to 6 g a day usually did not change warfarin tests. The drug labels still say to monitor, so tell your doctor first if you take a blood thinner.
Side effects and when to take it
The most common side effects are a fishy taste, burps, loose stools and an upset stomach. In a review of 90 trials, a fishy taste was much more common than on placebo. Take fish oil with your biggest meal, since fat helps it absorb. In a small study, a meal with 44 g of fat raised absorption of ethyl ester oils about 3-fold.
Questions
How much omega-3 should I take a day?
Most adults are advised to get 250 to 500 mg of EPA and DHA a day, counting fish you eat (EFSA). Read the EPA and DHA lines on the label. If you are pregnant or have a health condition, ask your doctor how much.
Can you take too much omega-3?
US and EU regulators found no safety concern for adults at up to 5 g of EPA and DHA a day from supplements. Above 1 g a day, heart trials saw more atrial fibrillation, so if you have heart disease, ask your doctor first.
Is 1,000 mg of fish oil enough?
Check the label. A regular "1,000 mg fish oil" softgel gives about 300 mg of EPA+DHA, because most of the oil is other fats. That fits the 250 to 500 mg advice for most adults.
Sources
- US FDA qualified health claim letter for EPA and DHA (Docket FDA-2014-Q-1146), 2019; 21 CFR 184.1472 (menhaden oil in foods). EFSA NDA Panel, EFSA Journal. 2012;10(7):2815.
- NIH Office of Dietary Supplements. Omega-3 Fatty Acids: Fact Sheet for Health Professionals (warfarin).
- American Heart Association advisories: Siscovick DS, et al., 2017, fish oil pills (PubMed 28289069), Rimm EB, et al., 2018, seafood (PubMed 29773586).
- Gencer B, et al. Circulation. 2021;144(25):1981-90. PubMed 34612056. Javaid M, et al. J Am Heart Assoc. 2024;13:e032390. PubMed 38742535. Chang JP, et al. Adv Nutr. 2023;14(6):1326-36. PubMed 37567449
- Lawson LD, Hughes BG. Biochem Biophys Res Commun. 1988;156(2):960-3. PubMed 2847723
- Kleiner AC, Cladis DP, Santerre CR. J Sci Food Agric. 2015;95(6):1260-7. PubMed 25044306. Assadourian JN, et al. JAMA Cardiol. 2023;8(10):984-8. PubMed 37610733
- Label study: NIH Dietary Supplement Label Database, 899 fish-oil labels read. Product labels: each brand’s current label. Prices: Amazon, checked November 6, 2026.
Figures come from each abstract or fact sheet; every PubMed ID was checked on October 17, 2026. Softgel counts are our arithmetic from each label. Not medical advice.