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Omega-3 Hi Potency with D3 Delicious Lemon Meringue

Natural Factors SeaRich
4.7
★ ★ ★ ★ ★
(111 ratings)
Fish Oil 4370 mg
Product Image
Score63
A coherent liquid fish-oil and vitamin D blend with useful source disclosure but unverified active omega-3 strength.
How scoring works
Quantity:6 Fluid Ounce(s) • (40 servings)
Goals:
Anti-Inflammatory Support
Cardiovascular Support

Score 63

A coherent liquid fish-oil and vitamin D blend with useful source disclosure but unverified active omega-3 strength.
How scoring works
$28.80($0.72 per serving)
iHerb
$ 28.80
Vitacost
$ 28.80
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Analysis

Anchovy, mackerel, and sardine sourcing is clearly identified, while vitamin D3 broadens the formula’s nutritional coverage. The flavored liquid may be easier to use than capsules for some people.

Separate EPA and DHA amounts are missing, so the high-potency claim cannot be checked against active omega-3 delivery. Molecular form, purification, testing, and oxidation protection also remain unclear.

The combination may suit a person who specifically wants liquid fish oil plus vitamin D. Users who need precise goal-based dosing should seek a complete fatty-acid breakdown.

Who is it for
  • Adults preferring flavored liquid fish oil
  • People seeking combined fish oil and vitamin D3
Best for
  • Liquid delivery
  • Named small-fish sources
  • A combined omega-3 and vitamin D routine

Pros

  • Large stated fish-oil amount
  • Anchovy, mackerel, and sardine are named
  • Vitamin D3 is quantified
  • Flavor may improve adherence

Cons

  • No EPA or DHA quantities
  • High-potency wording cannot be verified
  • Molecular form and purification are unstated
  • No clear antioxidant protection

Warnings

  • Contains fish oil and is unsuitable for people with a fish allergy.
  • Fish oil may increase bleeding tendency with anticoagulant or antiplatelet medicines.
  • Lanolin-derived vitamin D3 may not suit strict vegans.

Nutrient quality

64 Moderate impact

Small-fish sourcing and vitamin D provide a coherent cardiovascular-support formula. Missing EPA and DHA amounts prevent confirmation of a meaningful omega-three dose.

Ingredient transparency

63 Moderate impact

Listed ingredient amounts and serving details are stated clearly. Duplicated entries and missing active fatty acids make the composition hard to interpret.

Customer satisfaction

67 High impact

The supplied average rating is strong, and a solid response volume provides reasonable confidence in the average rating. No comment-level feedback is supplied to judge recurring complaints or purpose-specific experiences.

Value for money

60 Moderate impact

Higher serving cost is difficult to judge without active omega-three disclosure. Formula focus and disclosure determine whether that value holds up in practice.

Report analysis

Goals

Anti-Inflammatory Support
Anti-Inflammatory Support
Impact
High effect
B+ Goal FitD- Strength of SupportC- CoverageA Formula Quality
Vitamin D · 25 mcgFish Oil · 4370 mg

Fish oil and vitamin D3 provide plausible lipid-resolving and immune-modulating support. The fish-oil amount is large, but missing EPA and DHA values prevent assessment against the stated active-dose minimum.

Vitamin D3 is clearly disclosed at a useful amount, while the fish species are identified. The combination is coherent, but incomplete fatty-acid disclosure creates major uncertainty about its anti-inflammatory depth.

Study evidence
Fish Oil Supportive 68 studies
Vitamin D Supportive 101 studies
Cardiovascular Support
Cardiovascular Support
Impact
Moderate effect
A Goal FitF Strength of SupportD- CoverageB+ Formula Quality
Vitamin D · 25 mcgFish Oil · 4370 mg

Marine fish oil directly aligns with lipid, endothelial, and inflammatory support. Vitamin D adds general cardiometabolic support, but the actual EPA and DHA contribution cannot be determined.

Named small-fish sources and a substantial oil weight are useful signals. Missing fatty-acid amounts, molecular form, purification, and oxidation protection prevent a reliable potency assessment.

Study evidence
Fish Oil Supportive 185 studies
Vitamin D Mixed 170 studies

Ingredients

IngredientAmount per serving
Calories
40 Calorie(s)
Total Fat
4.5 Gram(s)
Cholesterol
25 mg
Vitamin D3 (Cholecalciferol, Lanolin)
 25 mcg
Fish Oil (Anchovy, Mackerel, Sardines)
 4370 mg
Gluten Free Adults 18–50 Dairy Free Sugar Free
Report overview
Fish Oil (Anchovy, Mackerel, Sardines) · 4370 mg OverallScore6
F Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyF Value

Small fish sources are identified, but the molecular form and purification method are absent. Missing EPA and DHA amounts prevent assessment of dose, concentration, and active profile. Value cannot be judged from active omega-3 delivery, and no antioxidant stabilizer is shown.

View ingredientView products
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84 Performance

Mega EPA/DHA

Life Extension
Clearly listed EPA at 720 mg and DHA at 480 mg make the active omega-3 amount easy to assess. Compared with the original, the explicit EPA and DHA disclosure makes potency easier to judge and provides a more focused basis for cardiovascular and inflammatory support.
87 Performance

Omega-3

Solgar
Clearly listed EPA at 1008 mg and DHA at 756 mg make the active omega-3 amount easy to assess. Compared with the original, the explicit EPA and DHA disclosure makes potency easier to judge and provides a more focused basis for cardiovascular and inflammatory support.
84 Performance

Alaska Wild Fish Oil Mega Omega-3

21st Century
Clearly listed EPA at 965 mg and DHA at 385 mg make the active omega-3 amount easy to assess. Compared with the original, the explicit EPA and DHA disclosure makes potency easier to judge and provides a more focused basis for cardiovascular and inflammatory support.
82 Budget

Ultra Strength One-per-Day RxOmega-3

Natural Factors
The label states 900 mg of total omega-3 fatty acids, but its two DHA ethyl ester entries leave the EPA-to-DHA split unclear. Compared with the original, it lowers serving cost, but missing separate EPA and DHA amounts make the potency trade-off harder to judge.
79 Budget

Omega-3 Fish Oil with Vitamin D 1000 mg Lemon Flavored

Swanson
Clearly listed EPA at 180 mg and DHA at 120 mg make the active omega-3 amount easy to assess. Compared with the original, it lowers serving cost and gives clearer information about active EPA and DHA, although other added ingredients may be absent.
76 Budget

Omega-3 Fish Oil 1000 mg Lemon

Natrol
Clearly listed EPA at 180 mg and DHA at 120 mg make the active omega-3 amount easy to assess. Compared with the original, it lowers serving cost and gives clearer information about active EPA and DHA, although other added ingredients may be absent.
83 Value

Ultra Strength One-per-Day RxOmega-3 with Vitamin D3 25 mcg (1000IU)

Natural Factors
The label states 900 mg of total omega-3 fatty acids, but its two DHA ethyl ester entries leave the EPA-to-DHA split unclear. Compared with the original, serving economics are favorable, but the missing EPA and DHA breakdown limits confidence in the value comparison.
70 Value

Fish Oil 1000 mg

Spring Valley
A stated 260 mg of combined EPA and DHA makes the main omega-3 amount easy to assess. Compared with the original, clear EPA and DHA disclosure combines with favorable serving economics to improve practical value, while the formula remains focused.
67 Value

Super DPA Fish Oil 1000 mg

Swanson
1000 mg of fish oil is clearly listed, but the label does not state separate EPA and DHA amounts. Compared with the original, serving economics are favorable, but the missing EPA and DHA breakdown limits confidence in the value comparison.
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Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Dose-dependent effects of fish oil on cardio-metabolic biomarkers in healthy middle-aged and elderly Chinese people: a double-blind randomized controlled trial.
    Song J; Hu M; Li C; Yang B; Ding Q; Wang C; Mao L · Food & function · 2018
    Randomized trial201 participantsAnti-Inflammatory Support forFish Oil
  2. Eicosapentaenoic acid supplementation alleviates pruritus, enhances skin moisture, and mitigates depression in maintenance hemodialysis patients.
    Lin YL; Wang CL; Chiang TI · Frontiers in nephrology · 2024
    Randomized trial60 participantsAnti-Inflammatory Support forFish Oil
  3. Lowering effects of fish oil supplementation on proinflammatory markers in hypertension: results from a randomized controlled trial.
    Yang B; Ren XL; Li ZH; Shi MQ; Ding F; Su KP; Guo XJ; Li D · Food & function · 2020
    Randomized trial77 participantsAnti-Inflammatory Support forFish Oil
  4. The effects of ω-3 fish oil emulsion-based parenteral nutrition plus combination treatment for acute paraquat poisoning.
    Meng Z; Dong Y; Gao H; Yao D; Gong Y; Meng Q; Zheng T; Cui X; Su X; Tian Y · The Journal of international medical research · 2019
    Randomized trial174 participantsAnti-Inflammatory Support forFish Oil
  5. Effects of Omega-3 Fatty Acid Intake in Patients Undergoing Dialysis: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
    Liu R; Jiang J; Fu Z; Liu C; Yao L; Quan H · Journal of the American Nutrition Association · 2022
    Meta-analysis49 studies pooledAnti-Inflammatory Support forFish Oil
  6. Vitamin D deficiency and C-reactive protein: a bidirectional Mendelian randomization study.
    Zhou A; Hyppönen E · International journal of epidemiology · 2023
    Observational study294,970 participantsAnti-Inflammatory Support forVitamin D
  7. Vitamin D in Children With Inflammatory Bowel Disease: A Randomized Controlled Clinical Trial.
    El Amrousy D; El Ashry H; Hodeib H; Hassan S · Journal of clinical gastroenterology · 2021
    Randomized trial120 participantsAnti-Inflammatory Support forVitamin D
  8. Vitamin D supplementation reduces infection rate and promotes wound healing in patients with diabetic foot ulcers.
    Gao YQ; Gao YH; Xing JH · World journal of diabetes · 2025
    Randomized trial120 participantsAnti-Inflammatory Support forVitamin D
  9. Associations of C-reactive Protein with 25-hydroxyvitamin D in 24 Specific Diseases: A Cross-sectional Study from NHANES.
    Yang F; Sun M; Sun C; Li J; Yang X; Bi C; Wang M; Pu L; Wang J; Wang C; Xie M; Yao Y; Jin L · Scientific reports · 2020
    Cross-sectional study9,809 participantsAnti-Inflammatory Support forVitamin D
  10. Combined effects of vitamin D deficiency and systemic inflammation on all-cause mortality and cause-specific mortality in older adults.
    Zhang C; Cui J; Li S; Shen J; Luo X; Yao Y; Shi H · BMC geriatrics · 2024
    Cohort study3,072 participantsAnti-Inflammatory Support forVitamin D
  11. Marine Omega-3 Supplementation and Cardiovascular Disease: An Updated Meta-Analysis of 13 Randomized Controlled Trials Involving 127 477 Participants.
    Hu Y; Hu FB; Manson JE · Journal of the American Heart Association · 2020
    Meta-analysis127,477 participants13 studies pooledCardiovascular Support forFish Oil
  12. Impact of omega-3 fatty acids on hypertriglyceridemia, lipidomics, and gut microbiome in patients with type 2 diabetes.
    Lu J; Liu R; Ren H; Wang S; Hu C; Shi Z; Li M; Liu W; Wan Q; Su Q; Li Q; Zheng H; Qu S; Yang F; Ji H; Lin H; Qi H; Wu X; Wu K; Chen Y; Xu Y; Xu M; Wang T; Zheng J; Ning G; Zheng R; Bi Y; Zhong H; Wang W · Med (New York, N.Y.) · 2025
    Randomized trial309 participantsCardiovascular Support forFish Oil
  13. A systematic review of fish-oil supplements for the prevention and treatment of hypertension.
    Campbell F; Dickinson HO; Critchley JA; Ford GA; Bradburn M · European journal of preventive cardiology · 2013
    Meta-analysis1,524 participants17 studies pooledCardiovascular Support forFish Oil
  14. Effects of fish oil-derived fatty acids on suboptimal cardiovascular health: A multicenter, randomized, double-blind, placebo-controlled trial.
    Zeng Q; Dong SY; Liu YP; Fu J; Shuai P; Zhao ZM; Li TX · Nutrition, metabolism, and cardiovascular diseases : NMCD · 2017
    Randomized trial422 participantsCardiovascular Support forFish Oil
  15. Effect of High-Dose Marine Omega-3 Fatty Acids on Atherosclerosis: A Systematic Review and Meta-Analysis of Randomized Clinical Trials.
    Sekikawa A; Cui C; Sugiyama D; Fabio A; Harris WS; Zhang X · Nutrients · 2020
    Meta-analysis6 studies pooledCardiovascular Support forFish Oil
  16. Comparative Efficacy of Nutraceuticals on Endothelial Function: A Systematic Review and Network Meta-Analysis.
    Norouzzadeh M; Rashedi MH; Mahdavi-Mazdeh G; Kosari A; Shahinfar H · Current atherosclerosis reports · 2026
    Meta-analysisCardiovascular Support forVitamin D
  17. A Randomized Trial of Vitamin D Supplementation on Vascular Function in CKD.
    Kumar V; Yadav AK; Lal A; Kumar V; Singhal M; Billot L; Gupta KL; Banerjee D; Jha V · Journal of the American Society of Nephrology : JASN · 2017
    Randomized trial120 participantsCardiovascular Support forVitamin D
  18. Randomized, placebo-controlled, double-blind clinical trial on the contributions of vitamin D in the control of cardiovascular risk factors, depressive symptoms and suicide risk.
    Porto C; Petribu K; Barbosa N; Magalhães R; Lira C; Porto AB; Markman-Filho B; Lordsleem A; Calado E; Magalhães J; Sougey E; Silva T; Junio A; Bandeira F; Leão R · American heart journal plus : cardiology research and practice · 2025
    Randomized trial224 participantsCardiovascular Support forVitamin D
  19. Dose responses of vitamin D3 supplementation on arterial stiffness in overweight African Americans with vitamin D deficiency: A placebo controlled randomized trial.
    Raed A; Bhagatwala J; Zhu H; Pollock NK; Parikh SJ; Huang Y; Havens R; Kotak I; Guo DH; Dong Y · PloS one · 2017
    Randomized trial70 participantsCardiovascular Support forVitamin D
  20. Paricalcitol and endothelial function in chronic kidney disease trial.
    Zoccali C; Curatola G; Panuccio V; Tripepi R; Pizzini P; Versace M; Bolignano D; Cutrupi S; Politi R; Tripepi G; Ghiadoni L; Thadhani R; Mallamaci F · Hypertension (Dallas, Tex. : 1979) · 2015
    Randomized trial88 participantsCardiovascular Support forVitamin D