Thorne Grape Seed Extract
vs
Douglas Laboratories Berberine Balance
Supplement Comparison

  • Grape (Vitis vinifera) Seed Extract: Thorne Grape Seed Extract has 2.0× more
  • The image below shows:
    • Side-by-side charts with label nutrient amounts, per serving
    • Nutrient forms as listed on the label
    • 5 nutrients compared
Bar chart: per-serving label amounts and listed forms for Thorne Grape Seed Extract vs Douglas Laboratories Berberine Balance.

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Frequently asked questions

Which active ingredients does Thorne Grape Seed Extract have?

  • Grape (Vitis vinifera) Seed Extract appears as Grape Seed Phytosome

Which active ingredients does Douglas Laboratories Berberine Balance have?

  • Alpha Lipoic Acid
  • Berberine appears as Berberine HCl
  • Grape (Vitis vinifera) Seed Extract

Which categories do Thorne Grape Seed Extract and Douglas Laboratories Berberine Balance belong to?

  • Antioxidant Complex
  • Herbal Extract

What health concerns do Thorne Grape Seed Extract and Douglas Laboratories Berberine Balance address?

  • Antioxidant Support
  • Heart & Cardiovascular Health
  • Skin, Hair & Nail Health
  • Blood Sugar Support

Which product has a higher amount of Grape (Vitis vinifera) Seed Extract per serving?

  • Thorne Grape Seed Extract has the highest total amount of Grape (Vitis vinifera) Seed Extract: 100 mg per serving

How do the serving sizes compare between the two supplements?

  • Serving size:
    • Thorne Grape Seed Extract: 1 capsule
    • Douglas Laboratories Berberine Balance: 2 capsules

Last updated: February 12, 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.
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  • Author: VIOscan Research Team