Jarrow Cardiovascular Optimizer
vs
Douglas Laboratories Ultra I-3-C
Supplement Comparison

  • Blend: Jarrow Cardiovascular Optimizer has 12× more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 7 nutrients compared
Bar chart: per-serving label amounts and listed forms for Jarrow Cardiovascular Optimizer vs Douglas Laboratories Ultra I-3-C.

Frequently asked questions

Which active ingredients does Jarrow Cardiovascular Optimizer have?

  • Red Yeast Rice appears as Red Yeast Rice (Monascus purpureus)
  • Hawthorn Berry (Crataegus spp.) extract appears as Hawthorn Extract (Crataegus pinnatifida) (Leaf)
  • Blend appears as Proprietary Mushroom Blend (Pleurotus ostreatus, Hericium erinaceus, Ganoderma lucidum, Lentinula edodes)

Which active ingredients does Douglas Laboratories Ultra I-3-C have?

  • Indole-3-Carbinol
  • Blend appears as Proprietary Blend (standardized broccoli extract sprouts cauliflower head Brussels sprout)

Which categories do Jarrow Cardiovascular Optimizer and Douglas Laboratories Ultra I-3-C belong to?

  • Mushroom Extract
  • Antioxidant Complex
  • Herbal Extract

What health concerns do Jarrow Cardiovascular Optimizer and Douglas Laboratories Ultra I-3-C address?

  • Heart & Cardiovascular Health
  • Cellular Health
  • Hormonal Balance
  • Women's Health

How do the serving sizes compare between the two supplements?

  • Serving size:
    • Jarrow Cardiovascular Optimizer: 4 capsules
    • Douglas Laboratories Ultra I-3-C: 1 capsule

Last updated: January 2, 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