NOW Foods Cod Liver Oil
vs
Jarrow K-Right
Supplement Comparison

  • Vitamin D: Jarrow K-Right has 7.4× more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 9 nutrients compared
Bar chart: per-serving label amounts and listed forms for NOW Foods Cod Liver Oil vs Jarrow K-Right.

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Frequently asked questions

Which active ingredients does NOW Foods Cod Liver Oil have?

  • Vitamin A appears as Retinyl Palmitate and Cod Liver Oil
  • Vitamin D appears as Cholecalciferol and Cod Liver Oil
  • Cod Liver Oil

Which active ingredients does Jarrow K-Right have?

  • Vitamin D appears as Cholecalciferol (D3)
  • Vitamin K appears as Vitamin K1 Phytonadione
  • Vitamin K appears as Vitamin K2 Menaquinone-4 (MK-4)
  • Vitamin K appears as Vitamin K2 Menaquinone-7 (MK-7)

Which categories do NOW Foods Cod Liver Oil and Jarrow K-Right belong to?

  • Single Mineral
  • Single Vitamin

What health concerns do NOW Foods Cod Liver Oil and Jarrow K-Right address?

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

Which product has a higher amount of Vitamin D per serving?

  • Jarrow K-Right has the highest total amount of Vitamin D: 2000 IU per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • NOW Foods Cod Liver Oil: 1 softgel
    • Jarrow K-Right: 1 softgel
  • Vitamin A
    • This supplement has 750 mcg RAE
    • Recommended Dietary Allowance in men: 900 mcg RAE
    • Recommended Dietary Allowance in women: 700 mcg RAE
    • Tolerable Upper Intake Level: 3000 mcg RAE
  • Vitamin D
    • This supplement has 270 IU
    • Recommended Dietary Allowance in men: 600 IU
    • Recommended Dietary Allowance in women: 600 IU
    • Tolerable Upper Intake Level: 4000 IU
  • Vitamin D
    • This supplement has 2000 IU
    • Recommended Dietary Allowance in men: 600 IU
    • Recommended Dietary Allowance in women: 600 IU
    • Tolerable Upper Intake Level: 4000 IU
  • Vitamin K
    • This supplement has 2180 mcg
    • Adequate Intake in men: 120 mcg
    • Adequate Intake in women: 90 mcg
    • Tolerable Upper Intake Level: Not established

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