Fish oil is one of the most widely studied supplements on the market, and the fish oil benefits people talk about most come down to two omega-3 fatty acids: EPA and DHA. Together they support the heart, the brain, the eyes, and the body's balanced inflammatory response.†
But with so many omega-3 fish oil products on the shelf, how do you pick one that is actually worth taking? In this guide, we explain what fish oil is, how EPA and DHA differ, and what to look for when choosing a supplement. We also show how our Ultra Omega-3 Fish Oil 1,000 mg measures up.
What Is Fish Oil, and Why Do Omega-3s Matter?
Fish oil is the oil taken from the tissues of oily, cold-water fish such as anchovy, sardine, and mackerel. It is a concentrated source of two long-chain omega-3 fatty acids: EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid).
Your body can convert a small amount of ALA, the omega-3 found in plant foods like flaxseed and walnuts, into EPA and DHA. Only a small portion converts, though, which is why many people look to fish or fish oil for direct sources.
EPA vs. DHA: What's the Difference?
|
Omega-3 |
What it does |
Best known for |
|---|---|---|
|
EPA |
Helps maintain a balanced inflammatory response and supports heart health† |
Cardiovascular and whole-body support |
|
DHA |
Serves as a major structural component of cell membranes in the brain, nervous system, and eyes† |
Cognitive function and vision |
A quality fish oil supplement delivers both, and the amounts of each on the label matter more than the total milligrams of oil.
5 Key Benefits of Fish Oil
Here is what the research on EPA and DHA most often points to:†
- Heart health. Omega-3s, especially EPA, are among the most studied nutrients for cardiovascular wellness. They support a steady heart rhythm, healthy blood clotting, and normal triglyceride levels.
- Brain and cognitive function. DHA is a major structural component of brain and nerve cell membranes, so it supports normal cognitive function and neurological health.
- Eye health and vision. DHA is also concentrated in the eyes and supports vision throughout life.
- A balanced inflammatory response. EPA helps regulate prostaglandin activity, which plays a part in how the body manages inflammation.
- Healthy cholesterol and triglyceride metabolism. Regular omega-3 intake supports how the body processes fats.
Individual results vary, and fish oil works best alongside a balanced diet, regular movement, and good sleep.
How to Choose the Best Fish Oil Supplement
Not all fish oil is created equal. Use this checklist when you compare labels:
- Check the EPA and DHA amounts, not just the oil total. "1,000 mg fish oil" on the front of the bottle does not tell you how much EPA and DHA you get. Look at the Supplement Facts panel for the milligrams of each.
- Look for the natural triglyceride form. This is the form omega-3s naturally take in fish oil, so it is worth confirming on the label.
- Choose molecularly distilled oil. Molecular distillation removes impurities and helps reduce the fishy aftertaste many people dislike.
- Ask about third-party purity testing. Reputable brands test for heavy metals, PCBs, dioxins, pesticides, and microbes, and are willing to say which standards they meet.
- Check the source. Sustainably harvested, wild-caught small fish like anchovy, sardine, and mackerel are a good sign.
- Read the rest of the label. Look for clear serving sizes, a transparent ingredient list, and a brand that stands behind its testing.
Spotlight: Organik MD Ultra Omega-3 Fish Oil 1,000 mg
Here is how our Ultra Omega-3 Fish Oil stacks up against the checklist above. Here is what each bovine softgel delivers:
|
What to look for |
Ultra Omega-3 Fish Oil 1,000 mg |
|---|---|
|
Fish oil per softgel |
1,250 mg, molecularly distilled |
|
Total omega-3 fatty acids |
1,063 mg |
|
EPA |
687 mg |
|
DHA |
313 mg |
|
Form |
Natural triglyceride form |
|
Source |
Sustainably harvested, wild-caught cold-water fish: anchovy, sardine, and mackerel |
|
Purity testing |
Tested to strict European standards and California Prop 65 requirements for heavy metals, PCBs, dioxins, pesticides, microbes, and other contaminants |
|
Taste |
Clean, high-purity oil with no fishy aftertaste |
The formula is weighted toward EPA, with roughly twice as much EPA as DHA, so it is a good fit if you want high-potency omega-3 support for heart health and a balanced inflammatory response.† You still get a meaningful dose of DHA for brain and vision support.†
Ready to try it? Shop Ultra Omega-3 Fish Oil | 1,000 mg
How to Take Fish Oil for the Best Results
- Follow the label. Take the serving size listed on the bottle unless your healthcare provider tells you otherwise.
- Take it with a meal. Omega-3s are fats, and taking fish oil with food that contains some fat is a simple way to support absorption and keep your stomach comfortable.
- Be consistent. Omega-3 intake builds over time, so a daily habit matters more than the time of day. Pair it with breakfast or dinner so it is easy to remember.
- Check with your doctor first if you are pregnant or nursing, take blood-thinning medication, or have a medical condition.
Fish Oil FAQ
What is fish oil good for?
Fish oil provides EPA and DHA, omega-3 fatty acids that support heart health, brain and cognitive function, vision, and a balanced inflammatory response.†
What is the difference between EPA and DHA?
EPA is best known for supporting heart health and a balanced inflammatory response, while DHA is a key structural component of the brain, nervous system, and eyes.† Most quality fish oil supplements contain both.
What does triglyceride-form fish oil mean?
Triglyceride form is the way omega-3s naturally occur in fish. Some supplements use altered forms created during processing, so it is worth checking the label.
How much EPA and DHA should I look for?
Check the Supplement Facts panel for the milligrams of EPA and DHA per serving, not just the total oil. The right amount depends on your needs, so ask your healthcare provider what is appropriate for you.
Does fish oil taste fishy?
Lower-quality or less-purified oils often leave a fishy aftertaste. Molecular distillation removes impurities and helps produce a cleaner-tasting oil.
When is the best time to take fish oil?
With a meal that contains some fat. Beyond that, the best time is whenever you will remember to take it every day.
The Bottom Line
The best fish oil supplement is one that gives you meaningful amounts of EPA and DHA, in a natural triglyceride form, from a clean, well-tested source. Read the Supplement Facts panel, ask about purity testing, and choose a brand that is open about where its oil comes from.
If you are ready to add a high-potency omega-3 to your routine, explore our Ultra Omega-3 Fish Oil | 1,000 mg and see the full details on the product page.
†These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This article is for educational purposes and is not a substitute for advice from your healthcare provider. If you have a medical condition or health concern, see your physician.