Most fish oil supplements focus on EPA and DHA, but DPA (docosapentaenoic acid) is a third omega-3 fatty acid found in fish oil that plays distinct roles in the body. Finding a fish oil with meaningful DPA content takes some label reading, since few brands highlight it. Products like Viva Naturals Triple-Strength Omega-3 (50 mg DPA per serving) and Carlson Cod Liver Oil (50 mg DPA per serving) are among the options that actually list DPA on the label, though the amounts remain modest compared to EPA and DHA.
Why DPA Matters Alongside EPA and DHA
Fish oil contains three predominant omega-3 fatty acids: EPA, DHA, and DPA. Most research and most products have focused almost entirely on the first two, but DPA is not simply a bystander. It has biological effects that are separate and distinct from EPA and DHA supplementation. Your body makes DPA by elongating EPA, and it can also convert DPA back into EPA when needed, making it a kind of flexible reserve in your omega-3 metabolism. Converting DPA forward into DHA is a more complex, inefficient process, which is one reason DPA tends to accumulate at its own steady level in the blood.
In lab studies, DPA has shown surprisingly potent effects on platelet function. It inhibits the clumping of platelets (the process behind dangerous blood clots) in a dose-dependent way, and early data suggests it may be roughly ten times more powerful than EPA at this task. DPA also helps improve cholesterol and triglyceride levels through mechanisms similar to EPA and DHA, increasing fat burning in liver cells and reducing triglyceride production.
Brain health is another area where DPA stands out. In cell studies, DPA reduced inflammatory signaling in immune cells of the brain and protected neurons from inflammation-driven damage. It did this partly by boosting production of BDNF, a protein that supports the survival and growth of nerve cells. When researchers blocked BDNF, DPA’s neuroprotective effect disappeared, confirming that this growth factor is central to how DPA shields the brain.
How Much DPA Is in Typical Fish Oil?
DPA is naturally present in fish oil, but in much smaller quantities than EPA or DHA. Even in supplements that disclose DPA content, you’ll typically see 35 to 50 mg per serving, compared to hundreds of milligrams of EPA and DHA in the same product. Many brands don’t list DPA at all, bundling it into a generic “other omega-3s” line on the label. If the supplement facts panel doesn’t break out DPA specifically, there’s no reliable way to know how much you’re getting.
There are no established daily intake recommendations for DPA from any major health authority. The U.S. Institute of Medicine has not set specific targets for EPA, DHA, or DPA individually. The European Food Safety Authority has reviewed DPA’s safety profile but likewise has not issued a recommended daily dose. In practice, this means you’re looking for a supplement that provides DPA as a bonus within a well-dosed EPA and DHA formula rather than chasing a specific DPA number.
Products That List DPA on the Label
A handful of supplements explicitly disclose their DPA content:
- Viva Naturals Triple-Strength Omega-3: 2,250 mg total omega-3s per two-softgel serving, with 1,500 mg EPA, 568 mg DHA, and 50 mg DPA. This is a high-dose option that delivers strong EPA and DHA alongside its DPA.
- Carlson Cod Liver Oil: 1,100 mg total omega-3s per teaspoon, with 370 mg EPA, 500 mg DHA, and 50 mg DPA. Because it’s cod liver oil, it also includes vitamins A, D, and E. The liquid format works well for people who dislike swallowing large softgels.
- Freshfield Vegan Omega-3: 500 mg total omega-3s per two-capsule serving, with 225 mg DHA and 35 mg DPA. This algae-based option contains no EPA, so it’s a different profile. It’s a lower overall dose but one of the few plant-based supplements that lists DPA.
The DPA amounts across these products are fairly similar. The real differentiator is the total omega-3 dose and the EPA-to-DHA ratio, which should match your health goals. If you want the highest combined omega-3 intake with DPA included, the Viva Naturals formula delivers the most per serving.
What to Look for Beyond DPA Content
The chemical form of the omega-3s in your supplement affects how well your body absorbs them. Fish oils come in three main forms: triglyceride, ethyl ester, and free fatty acid. Clinical data shows that free fatty acid formulations have significantly higher bioavailability than ethyl ester forms, especially when taken with lower-fat meals. In one head-to-head trial, a free fatty acid formula containing EPA and DPA produced larger reductions in triglycerides, total cholesterol, and inflammatory markers compared to an ethyl ester EPA product, even at the same dose. If a supplement label says “triglyceride form” or “rTG” (re-esterified triglyceride), that’s generally well absorbed too. Ethyl ester forms are cheaper to produce but depend more heavily on being taken with a fatty meal for proper absorption.
Third-party testing matters just as much as what’s on the label. The IFOS (International Fish Oil Standards) certification tests omega-3 supplements for three things: whether the actual omega-3 content matches the label claim, whether the oil contains unsafe levels of contaminants like heavy metals and PCBs, and whether the oil has oxidized (gone rancid). Certified products post their full test results publicly online. If a brand carries IFOS certification, you can verify that the DPA and other omega-3 levels are accurate, not just marketing claims.
Getting More DPA From Food
Fatty fish is the primary dietary source of DPA. Salmon, mackerel, herring, and sardines all contain DPA naturally alongside EPA and DHA. Seal oil, consumed in some northern cultures, has an unusually high DPA percentage compared to standard fish oils, but it’s not widely available as a commercial supplement in most markets.
Because your body can synthesize DPA from EPA through a straightforward elongation step, consistently eating fatty fish two to three times per week or taking a well-dosed EPA-rich fish oil will support your DPA levels even if the supplement doesn’t list DPA explicitly. The conversion from EPA to DPA is relatively efficient compared to other omega-3 conversions, so a strong EPA intake provides a reliable pathway to maintaining DPA in your tissues. That said, if you want to skip the conversion step and deliver DPA directly, choosing a product that lists it on the label is your most transparent option.