NOW Foods Krill Oil
vs
Douglas Laboratories QÜELL Fish Oil Ultra SPM
Supplement Comparison

  • Eicosapentaenoic Acid (EPA): Douglas Laboratories QÜELL Fish Oil Ultra SPM has 67% more
  • Docosahexaenoic Acid (DHA): Douglas Laboratories QÜELL Fish Oil Ultra SPM has 3.3× more
  • EPA + DHA (combined EPA+DHA content - individual amounts of EPA+DHA not specified): Douglas Laboratories QÜELL Fish Oil Ultra SPM has 2.2× more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 13 nutrients compared
Bar chart: per-serving label amounts and listed forms for NOW Foods Krill Oil vs Douglas Laboratories QÜELL Fish Oil Ultra SPM.

Try the VIOscan dashboard demo for free

Build comparison charts in seconds – no signup or card needed

This is a free preview of the $9.99/month premium dashboard

Use the interactive demo with multivitamins samples

Try Free Demo

Frequently asked questions

Which active ingredients does NOW Foods Krill Oil have?

  • Eicosapentaenoic Acid (EPA) appears as Phospholipids (PL)
  • Docosahexaenoic Acid (DHA) appears as Phospholipids (PL)
  • Astaxanthin appears as Esterified Astaxanthin
  • Phospholipids
  • Krill Oil appears as NKO Krill Oil

Which active ingredients does Douglas Laboratories QÜELL Fish Oil Ultra SPM have?

  • Eicosapentaenoic Acid (EPA) appears as Unspecified
  • Docosahexaenoic Acid (DHA) appears as Unspecified
  • Docosapentaenoic Acid (DPA)
  • Specialized Pro-Resolving Mediators (SPMs)

Which categories do NOW Foods Krill Oil and Douglas Laboratories QÜELL Fish Oil Ultra SPM belong to?

  • Fish Oil and Omega-3

What health concerns do NOW Foods Krill Oil and Douglas Laboratories QÜELL Fish Oil Ultra SPM address?

  • Antioxidant Support
  • Anti-Inflammatory Support
  • Brain, Focus & Cognitive Function
  • Heart & Cardiovascular Health
  • Eye Health
  • Immune System Support
  • Joint & Bone Health

Which product has a higher amount of EPA + DHA (combined EPA+DHA content - individual amounts of EPA+DHA not specified) per serving?

  • Douglas Laboratories QÜELL Fish Oil Ultra SPM has the highest total amount of EPA + DHA (combined EPA+DHA content - individual amounts of EPA+DHA not specified): 425 mg per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • NOW Foods Krill Oil: 2 softgels
    • Douglas Laboratories QÜELL Fish Oil Ultra SPM: 1 softgel

Last updated: February 15, 2026

  • Sources & Methodology: Nutrient data and forms are taken directly from Supplement Facts labels. Reviewed and standardized by the VIOscan Research Team. Learn more on the Methodology page.
  • We show the Recommended Dietary Allowance (RDA) when available. If no RDA exists, we show the Adequate Intake (AI). Tolerable Upper Intake Levels (UL) are used for upper limits. Unless otherwise noted, RDAs shown correspond to healthy adults aged 19–50 years and are sex-specific. Separate values exist for 51–70 years and >70 years, and pregnancy and lactation are excluded. All values come from the Dietary Reference Intakes (DRIs) published by the National Academies of Sciences, Engineering, and Medicine (NASEM), Food and Nutrition Board (FNB).
  • Transparency: We’re funded by our users. We don’t have sponsors or affiliate links, and we don’t sell supplements.
  • Editorial standards: we provide independent, impartial and objective data analysis.
  • This analysis is for educational purposes only. It is not a substitute for medical advice.
  • Questions? Read our Frequently Asked Questions or contact us, we’re here to help.
  • See an error? Report it through our Contact page.
  • Author: VIOscan Research Team