
Sundown Naturals markets its fish oil as Extra Strength and at 2,400mg of fish oil per serving, it does live up the claim. It’s one of the highest dosages of fish oil we’ve seen on the market.
The core principle of Sundown Naturals is “Clean Nutrition” and their fish oil is 100% non-GMO, gluten-free, dairy-free, and lactose-free.
Sundown Naturals purifies its fish oil to eliminate mercury and other potentially harmful ingredients.
Quick Facts
- Very high strength, at 2,400mg of fish oil per serving
- Allergen free ingredient list (no shellfish, peanuts, or tree nuts)
- Sundown Naturals has been around for over 40 years and is focused on “Clean Nutrition”
- Honestly, the serving size might be overkill (consult with your physician as always)
Nutrition Breakdown

Each serving of Sundown Naturals’ fish oil packs a whopping 2,400mg, more than almost every competitor we’ve found.
A serving does require taking 2 softgels, but it provides a nice balance of both DHA and EPA Omega-3 fatty acids.
Unlike some other fish oils on the market, Sundown Naturals uses a shellfish-free formula (made with only wild caught fish!) that is also free of peanuts and tree nuts. If you’re allergic to any of those ingredients, this supplement is a great way to add Omega-3’s to your diet.
Hear Our Expert's Take
Sundown Fish Oil Extra Strength is sourced from a variety of sustainable fish; anchovy, herring, mackerel, sardine. Each serving contains 2,400mg of fish oil comprising 720mg of omega-3. The dosage is good, with benefits to cardiovascular health, such as reduction of triglycerides, being seen in clinical trials with fish oil intake of 1,000mg and above per day. The majority of trials use supplements containing slightly more EPA and DHA, with at least 840mg, however the EPA and DHA content here, more than covers official dietary recommendations for Americans.
This supplement’s omega-3 is delivered in the natural triglyceride form, which is better absorbed (see this study) than the processed ethyl ester form. One strong benefit of this supplement is that the fish oil is provided in its natural and unprocessed form from the whole fish. It is a solid dosage, and it is competitively priced – a recommended choice for healthy individuals wishing to supplement their diet.

Cheryl Fayolle
BS, MS, RDN
Registered Nutritionist
Expert's Rating: 4.5 / 5

About The Brand: Sundown Naturals

Sundown Naturals focuses on “Clean Nutrition.” Their vitamins and supplements are 100% Non-GMO and free of gluten, dairy, and artificial flavors.
Founded in Florida, Sundown has been making vitamins and supplements for over 40 years.
Learn more about Sundown Naturals and see all of their products in the Suppwise database.The Final Word
Sundown Naturals’ fish oil is one of the highest strength, cleanest Omega-3 supplements we’ve seen. With 2,400mg of fish oil sourced from wild caught fish, this product is a great choice to add DHA and EPA fatty acids to your diet.
This brand clearly goes above and beyond to live up to their motto of “Clean Nutrition.” All of their products are 100% non-GMO and:
- Gluten free
- Wheat free
- Dairy free
- Lactose free
- Artificial flavors free
Their fish oil is also purified to eliminate heavy metals like mercury, PCBs, and dioxins. If you’re looking for a strong, clean fish oil, this is the one for you.
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Benefits of Fish Oil
Fish oil is rich in Omega-3 fatty acids, including DHA and EPA. If you don’t consume at least 2 servings of fish per week, fish oil supplements are great for boosting your Omega-3 fatty acid intake to recommended levels.
Studies have shown that benefits of taking a fish oil supplement may include:
- Lower blood pressure
- Decreased cholesterol levels
- Improved brain function
- Better eye health
- Healthy skin
- Stronger bones
With all of these potential benefits, it’s no wonder that fish oil is one of the most popular dietary supplements.