Source Naturals Resveratrol 100, 100 mg, 60 Capsules supplement bottle
Source Naturals

Resveratrol 100, 100 mg, 60 Capsules

What We Researched
5 active ingredients analyzed · 3 inactive ingredients decoded · 1 brand certification checked · 1 retailer compared · Last updated: Mar 2026
67
Product Score Fair
66
Brand Score Fair

Product Analysis

Transparency Very Good

Supplement Facts

IngredientAmount% DV
Calcium 25 mg 3%
Polygonum Cuspidatum Root Extract 200 mg *
Standardized to 50% Natural trans-Resveratrols yielding
Natural trans-Resveratrols 100 mg *
Red Wine Extract 5 mg *
Bioavailability Excellent

Absorption Rating

  • Calcium Good
  • Polygonum Cuspidatum Root Extract Fair
  • Standardized to 50% Natural trans-Resveratrols yielding Good
  • Natural trans-Resveratrols Good
  • Red Wine Extract Good
Other Ingredients Excellent

Fillers & Additives

  • Dibasic Calcium Phosphate
  • Gelatin (Capsule)
  • Colloidal Silicon Dioxide and Magnesium Stearate
Efficacy Very Poor

Dosage Analysis

  • Calcium 25 mg Under-dosed
  • Polygonum Cuspidatum Root Extract 200 mg Under-dosed
  • Natural trans-Resveratrols 100 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calcium 25 mg 3%
Polygonum Cuspidatum Root Extract 200 mg *
Standardized to 50% Natural trans-Resveratrols yielding
Natural trans-Resveratrols 100 mg *
Red Wine Extract 5 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Dibasic Calcium Phosphate Generally_safe

It is used as a filler and to improve tablet hardness.

Gelatin (Capsule) Safe

It is used as a material for making capsules.

Colloidal Silicon Dioxide and Magnesium Stearate Generally_safe

They are used to improve the manufacturing process of supplements.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$13$12$11$10$9 Mar 12 $10.73
Vitacost

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Source Naturals

Founded 1982 · Scotts Valley, CA, USA · 837 products · sourcenaturals.com/

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source
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Frequently Asked Questions
Is Source Naturals Resveratrol 100, 100 mg a good supplement?

Source Naturals Resveratrol 100, 100 mg, 60 Capsules received a product quality score of 67/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 5 active ingredients with 60 servings per container. Of the 3 inactive ingredients, 1 are rated safe and 0 are flagged for review. The manufacturer, Source Naturals, holds a brand trust score of 66/100 with 1 verified certifications including Fda Gmp Inspections.

What are the ingredients in Source Naturals Resveratrol 100, 100 mg?

Source Naturals Resveratrol 100, 100 mg contains 5 active ingredients: Calcium (25 mg), Polygonum Cuspidatum Root Extract (200 mg), Standardized to 50% Natural trans-Resveratrols yielding, Natural trans-Resveratrols (100 mg), Red Wine Extract (5 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Source Naturals Resveratrol 100, 100 mg safe to take?

Source Naturals Resveratrol 100, 100 mg, 60 Capsules has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Source Naturals a trustworthy supplement brand?

Source Naturals receives a brand trust score of 66/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1982 and headquartered in Scotts Valley, CA, USA, the company offers 837 products in their lineup. They hold 1 verified certifications including Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. No regulatory violations or FDA warning letters were found in our research.

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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. 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.