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Douglas Laboratories Quell Fish Oil EPA/DHA Plus D supplement bottle
Douglas Laboratories

Quell Fish Oil EPA/DHA Plus D Review

What We Researched
4 active ingredients analyzed · 5 inactive ingredients decoded · 6 brand certifications checked · Page generated: Sep 2026
93
Product Score Excellent
100
Brand Score Excellent

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin D3 (as Cholecalciferol) 25 mcg 125%
Omega-3 Fatty Acids 1250 mg †
Bioavailability Very Good

Absorption Rating

  • Vitamin D3 (as Cholecalciferol) Good
  • Omega-3 Fatty Acids Fair
Other Ingredients Excellent

Fillers & Additives

  • Gelatin
  • Glycerin
  • Water
  • Mixed Tocopherols
  • Rosemary Extract
Efficacy Excellent

Dosage Analysis

  • Vitamin D3 (as Cholecalciferol) 25 mcg Effective
  • Omega-3 Fatty Acids 1250 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Calories 10 kcal
Total Fat 1.3 g 2%
Vitamin D3 (as Cholecalciferol) 25 mcg 125%
Omega-3 Fatty Acids 1250 mg †

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Glycerin Safe

Retains moisture and helps dissolve ingredients in softgels and liquids.

Water Safe

Dissolves and carries water-soluble ingredients.

Mixed Tocopherols Safe

Prevents oxidation and rancidity in oil-based supplements.

Rosemary Extract Safe

Prevents oxidation and extends shelf life naturally.

Brand Trust Report
Douglas Laboratories

Founded 1955 · Pittsburgh, Pennsylvania, United States · 32 products · douglaslabs.com

Certifications

6 certifications
Consumerlab Source available Primary evidence
Fda Gmp Inspections Source available Primary evidence
Nsf Certified For Sport Source available Primary evidence
Nsf Gmp Source available Primary evidence
Usda Organic Source available Primary evidence
NSF Certified Supporting evidence unavailable

Transparency

5 claims
Third Party Testing Claim — Verified Evidence available Evidence
Coa Availability — Verified Evidence available Evidence
In House Testing — Verified Evidence available Evidence
Testing Lab Disclosure — True Brand claim; evidence unavailable

Violation History

2 incidents
Recall Douglas Labs Stress-B-Plus2024-10-07 Source available Primary source
Prop 65 Lead2008-10-22 Source available Primary source
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Frequently Asked Questions
Is Douglas Laboratories Quell Fish Oil EPA/DHA Plus D a good supplement?

Douglas Laboratories Quell Fish Oil EPA/DHA Plus D received a product quality score of 93/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 4 active ingredients with 30 servings per container. All 5 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Douglas Laboratories, holds a brand trust score of 100/100.

What are the ingredients in Douglas Laboratories Quell Fish Oil EPA/DHA Plus D?

Douglas Laboratories Quell Fish Oil EPA/DHA Plus D contains 4 active ingredients: Calories (10 kcal), Total Fat (1.3 g), Vitamin D3 (as Cholecalciferol) (25 mcg), Omega-3 Fatty Acids (1250 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Douglas Laboratories Quell Fish Oil EPA/DHA Plus D safe to take?

GoodSupp reviewed the inactive-ingredient data available for Douglas Laboratories Quell Fish Oil EPA/DHA Plus D. All 5 inactive ingredients — including capsule materials, fillers, and binders — are currently classified as safe in GoodSupp's ingredient reference data. This label analysis cannot determine whether the product is safe for a particular person, and source labels may change. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Douglas Laboratories a trustworthy supplement brand?

Douglas Laboratories receives a brand trust score of 100/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1955 and headquartered in Pittsburgh, Pennsylvania, United States, the company offers 32 products in their lineup. Note: Douglas Laboratories has 2 historical regulatory incidents on record, which are factored into the trust score.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records — read our methodology. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.