AquaOmega’s high-DHA fish oil liquid, listed on Amazon as the 5X Ultimate Strength Omega-3, puts 3,380 mg of DHA in every serving. This review reads the Supplement Facts panel line by line, works out the real cost per 1,000 mg of DHA, and compares it with three other products at their US prices checked on October 12, 2026.
Disclosure: As an Amazon Associate I earn from qualifying purchases. Some links on this page are affiliate links, which cost you nothing extra. Products are compared using the information on their labels and, where available, published test reports.
What the label says
| Supplement Facts line | Per serving (1½ tsp, 7.5 mL) |
|---|---|
| Servings per container | 30 (225 mL bottle) |
| Calories | 60 |
| Total fat | 7 g (9% DV) |
| Saturated fat | 0.5 g (3% DV) |
| Polyunsaturated fat | 5 g |
| Monounsaturated fat | 1 g |
| Cholesterol | 20 mg (7% DV) |
| Vitamin D (as cholecalciferol) | 25 mcg (1,000 IU), 125% DV |
| Omega-3 fatty acids | 4,500 mg |
| DHA | 3,380 mg |
| EPA | 670 mg |
| Other omega-3 (4,500 − 3,380 − 670) | 450 mg |
Source: the Supplement Facts panel on the product label, as pictured in the Amazon.com listing, checked October 12, 2026.
Other ingredients on the label: anchovy oil, natural flavors, rosemary extract, monk fruit extract and mixed tocopherol concentrate. The label does not list the oil form or a lot-specific test result, so this review does not make claims about either.
The label math
- DHA per serving: 3,380 mg. EPA per serving: 670 mg.
- DHA to EPA ratio: 3,380 ÷ 670 = about 5:1. This is a DHA-heavy oil, the opposite of a high-EPA formula.
- EPA + DHA per serving: 3,380 + 670 = 4,050 mg.
- Volume for 1,000 mg of DHA: 1.5 tsp ÷ 3.38 = about 0.44 teaspoons.
- Cost per 1,000 mg of DHA: $42.00 ÷ (30 × 3.38) = $0.41.
- Cost per serving: $42.00 ÷ 30 = $1.40.
The same method works for any label; the EPA version is in the guide to eicosapentaenoic acid (EPA), and for how oil weight differs from DHA and EPA weight, see From Ocean to Capsule.
How it compares on DHA
| Product | Price | Serving | DHA per serving | EPA per serving | Cost per 1,000 mg DHA |
|---|---|---|---|---|---|
| AquaOmega High DHA (liquid) | $42.00 | 1½ tsp, 30 servings | 3,380 mg | 670 mg | $0.41 |
| Nature’s Way NutraSea (liquid) | $31.66 | 1 tsp, 40 servings | 500 mg | 750 mg | $1.58 |
| Nordic Naturals ProOmega (softgels) | $30.70 | 2 softgels, 30 servings | 450 mg | 650 mg | $2.27 |
| AquaOmega High EPA softgels (listed as 5X Ultimate Strength) | $42.00 | 4 softgels, 30 servings | 532 mg | 2,659 mg | $2.63 |
Green = best in that row. All prices are from Amazon.com listings checked October 12, 2026. NutraSea is the 200 mL bottle (40 servings of 1 tsp), listed by a third-party seller. Prices change often, so check the current listing before you buy.
On DHA alone the AquaOmega liquid is the cheapest of the four by a wide margin, because it carries far more DHA per serving. The last row is the product from our AquaOmega high-EPA review, which is built for EPA and is not a good buy if DHA is what you want. Match the product to the fatty acid you are after.
Who it suits, and what to watch
In its favor
- 3,380 mg DHA per serving, about a 5:1 DHA-to-EPA ratio
- Lowest cost per 1,000 mg of DHA of the four compared
- Liquid, so the dose is flexible by the teaspoon
- Includes 1,000 IU of vitamin D
Worth knowing
- One serving is about 4 g of EPA + DHA, so do not stack servings
- The vitamin D (1,000 IU) adds to anything else you take
- It is a liquid: measure it, and check the label for storage
- Not vegan; the oil is from anchovy (see the vegan omega-3 guide)
- Oil form and test results are not stated on the label
Dose and safety
For general dose ranges, see the omega-3 dosage guide.
Verdict
If you specifically want a DHA-rich oil and cost per milligram of DHA is your priority, the AquaOmega High DHA liquid is the best value of the four products compared here at these prices: 3,380 mg of DHA per serving for about $0.41 per 1,000 mg. The trade-offs are the high per-serving dose, which calls for care and a conversation with your doctor, and a label that does not state the oil form or test results. If you want EPA instead, look at a high-EPA product.
Check availability on Amazon
Frequently Asked Questions
How much DHA is in AquaOmega High DHA liquid?
The Supplement Facts panel lists 3,380 mg of DHA and 670 mg of EPA per 1½ teaspoon serving, with 4,500 mg of total omega-3.
What is the difference between AquaOmega High DHA and High EPA?
High DHA is built around DHA, with about 5 times more DHA than EPA. The high-EPA softgel is built around EPA at about a 5:1 EPA-to-DHA ratio. Which you need depends on the fatty acid you are after; see the guide to eicosapentaenoic acid (EPA) and the AquaOmega high-EPA review.
Is there a vegan AquaOmega?
AquaOmega may also sell a plant-based High DHA softgel. This review covers the fish oil liquid only and did not review that label. For plant-based options generally, see the vegan omega-3 guide.
How much does 1,000 mg of DHA cost?
About $0.41 with this product at $42.00 for 30 servings. The formula is price ÷ (servings × DHA mg per serving ÷ 1,000).
Sources
- AquaOmega 5X Ultimate Strength Omega-3 liquid, Amazon.com listing (price, bottle size, Supplement Facts and other ingredients), checked October 12, 2026; AquaOmega (brand site).
- Amazon.com listings checked October 12, 2026: Nutra Sea (200 mL; Supplement Facts per 1 tsp) and Nordic Naturals ProOmega (60 count; Supplement Facts and ingredients per 2 softgels).
- NIH Office of Dietary Supplements, Omega-3 Fatty Acids: Fact Sheet for Health Professionals (FDA 5 g/day, atrial fibrillation). FDA letter on EPA and DHA omega-3 fatty acids (Docket FDA-2014-Q-1146).
Last updated October 17, 2026. Product details come from the manufacturer’s label and retailer listings; prices were checked on October 12, 2026 and change often. This article is general information, not medical advice. Talk to your doctor before starting a high-dose omega-3 supplement, especially if you take blood thinners, have a heart rhythm condition, are pregnant or have a fish or shellfish allergy.