Source Naturals Resveratrol 100, 100 mg, 120 Capsules supplement bottle
Source Naturals

Resveratrol 100, 100 mg, 120 Capsules

What We Researched
4 active ingredients analyzed · 4 inactive ingredients decoded · 1 brand certification checked · 1 retailer compared · Last updated: Mar 2026
68
Product Score Fair
66
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Calcium 25 mg 3%
Yielding(Natural trans-Resveratrols) 100 mg *
Red Wine Extract 5 mg *
Polygonum Cuspidatum Extract (standardized to 50% trans-resveratrol) (Root Extract)Standardized to 50% Natural trans-Resveratrols 5 mg *
Bioavailability Very Good

Absorption Rating

  • Calcium Good
  • Yielding(Natural trans-Resveratrols) Fair
  • Red Wine Extract Good
  • Polygonum Cuspidatum Extract (standardized to 50% trans-resveratrol) (Root Extract)Standardized to 50% Natural trans-Resveratrols Fair
Other Ingredients Excellent

Fillers & Additives

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

Dosage Analysis

  • Calcium 25 mg Under-dosed
  • Polygonum Cuspidatum Extract (standardized to 50% trans-resveratrol) (Root Extract)Standardized to 50% Natural trans-Resveratrols 5 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calcium 25 mg 3%
Yielding(Natural trans-Resveratrols) 100 mg *
Red Wine Extract 5 mg *
Polygonum Cuspidatum Extract (standardized to 50% trans-resveratrol) (Root Extract)Standardized to 50% Natural trans-Resveratrols 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.

Hypromellose (Capsule) Safe

It is used as a material for making vegetarian capsules.

Colloidal Silicon Dioxide Generally_safe

It prevents clumping and improves powder flow.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$22$21$20$19$18 Mar 12 $20.48
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
Related Supplements
Frequently Asked Questions
Is Source Naturals Resveratrol 100, 100 mg a good supplement?

Source Naturals Resveratrol 100, 100 mg, 120 Capsules received a product quality score of 68/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 4 active ingredients with 120 servings per container. Of the 4 inactive ingredients, 2 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 4 active ingredients: Calcium (25 mg), Yielding(Natural trans-Resveratrols) (100 mg), Red Wine Extract (5 mg), Polygonum Cuspidatum Extract (standardized to 50% trans-resveratrol) (Root Extract)Standardized to 50% Natural trans-Resveratrols (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, 120 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.

Scan Any Supplement Instantly

Download GoodSupp to scan barcodes, check ingredient safety, and find the best supplements for your needs.

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.