Nature's Answer Resveratrol, 637 mg, 60 Vegetarian Capsules supplement bottle
Nature's Answer

Resveratrol, 637 mg, 60 Vegetarian Capsules

What We Researched
4 active ingredients analyzed · 6 inactive ingredients decoded · 5 brand certifications checked · 3 retailers compared · Last updated: Mar 2026
71
Product Score Fair
78
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (as Ascorbic Acid) 60 mg 67%
Japanese Knotweed (Polygonum cuspidatum) Root Extract (standardized for 50% Trans-Resveratrol, yielding 250 mg) 500 mg
Proprietary Cellular Longevity ComplexGrape Seed Extract (95% proanthocyanins), Red Wine Extract (30% Polyphenols), Grape Skin Extract (20% Polyphenols) Muscadine Grape Seed, Muscadine Grape Skin, Grape Fruit and Skin, Raspberry Fruit, Cranberry Fruit Juice Powder, Tart Cherry Fruit, Strawberry Fruit, Acai Fruit Pulp, Goji Fruit Juice Powder, Mangosteen Fruit, Pomegranate Fruit Extract, Green Tea Leaf Extract (95% Polyphenols, 60% EGCG), Fig Fruit, Wild Blueberry Fruit, Wild Bilberry Fruit, Prune Fruit. 110 mg
Quercetin 27 mg
Bioavailability Good

Absorption Rating

  • Vitamin C (as Ascorbic Acid) Fair
  • Japanese Knotweed (Polygonum cuspidatum) Root Extract (standardized for 50% Trans-Resveratrol, yielding 250 mg) Fair
  • Proprietary Cellular Longevity ComplexGrape Seed Extract (95% proanthocyanins), Red Wine Extract (30% Polyphenols), Grape Skin Extract (20% Polyphenols) Muscadine Grape Seed, Muscadine Grape Skin, Grape Fruit and Skin, Raspberry Fruit, Cranberry Fruit Juice Powder, Tart Cherry Fruit, Strawberry Fruit, Acai Fruit Pulp, Goji Fruit Juice Powder, Mangosteen Fruit, Pomegranate Fruit Extract, Green Tea Leaf Extract (95% Polyphenols, 60% EGCG), Fig Fruit, Wild Blueberry Fruit, Wild Bilberry Fruit, Prune Fruit. Good
  • Quercetin Fair
Other Ingredients Excellent

Fillers & Additives

  • Vegetable Cellulose (Capsule)
  • Rice Flour
  • Quik-Sorb® (ginger rhizome, amla fruit, capsicum fruit)
  • Calcium Silicate
  • Maltodextrin
  • Silicon Dioxide
Efficacy Poor

Dosage Analysis

  • Vitamin C (as Ascorbic Acid) 60 mg Under-dosed
  • Japanese Knotweed (Polygonum cuspidatum) Root Extract (standardized for 50% Trans-Resveratrol, yielding 250 mg) 500 mg Effective
  • Proprietary Cellular Longevity ComplexGrape Seed Extract (95% proanthocyanins), Red Wine Extract (30% Polyphenols), Grape Skin Extract (20% Polyphenols) Muscadine Grape Seed, Muscadine Grape Skin, Grape Fruit and Skin, Raspberry Fruit, Cranberry Fruit Juice Powder, Tart Cherry Fruit, Strawberry Fruit, Acai Fruit Pulp, Goji Fruit Juice Powder, Mangosteen Fruit, Pomegranate Fruit Extract, Green Tea Leaf Extract (95% Polyphenols, 60% EGCG), Fig Fruit, Wild Blueberry Fruit, Wild Bilberry Fruit, Prune Fruit. 110 mg Under-dosed
  • Quercetin 27 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C (as Ascorbic Acid) 60 mg 67%
Japanese Knotweed (Polygonum cuspidatum) Root Extract (standardized for 50% Trans-Resveratrol, yielding 250 mg) 500 mg
Proprietary Cellular Longevity ComplexGrape Seed Extract (95% proanthocyanins), Red Wine Extract (30% Polyphenols), Grape Skin Extract (20% Polyphenols) Muscadine Grape Seed, Muscadine Grape Skin, Grape Fruit and Skin, Raspberry Fruit, Cranberry Fruit Juice Powder, Tart Cherry Fruit, Strawberry Fruit, Acai Fruit Pulp, Goji Fruit Juice Powder, Mangosteen Fruit, Pomegranate Fruit Extract, Green Tea Leaf Extract (95% Polyphenols, 60% EGCG), Fig Fruit, Wild Blueberry Fruit, Wild Bilberry Fruit, Prune Fruit. 110 mg
Quercetin 27 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Vegetable Cellulose (Capsule) Safe

It is used as a material for making vegetarian capsules.

Rice Flour Safe

Natural bulking agent to fill capsule space. Hypoallergenic.

Quik-Sorb® (ginger rhizome, amla fruit, capsicum fruit) Unknown
Calcium Silicate Safe

Prevents ingredient clumping during manufacturing.

Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$30$29$28$27$26 Mar 12 $28.49$28.49
iHerb
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
Nature's Answer

Founded 1972 · Hauppauge, New York, United States · 234 products · naturesanswer.com

Certifications

5 certifications
Consumerlab Verified Source
Fda Gmp Inspections Verified Source
Non Gmo Project Verified Source
Nsf Gmp Verified Source
Usda Organic Verified Source

Transparency

3 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source

Violation History

3 incidents
Recall Coral Calcium2021-05-13Source
Fda Warning Product (Coral Calcium) contained cesium chloride, which is considered a new dietary ingredient that has not been shown to be safe. The product was deemed adulterated.2021-05-05Source
Prop 65 Lead2014-08-19Source
Related Supplements
Frequently Asked Questions
Is Nature's Answer Resveratrol, 637 mg a good supplement?

Nature's Answer Resveratrol, 637 mg, 60 Vegetarian Capsules received a product quality score of 71/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 4 active ingredients Of the 6 inactive ingredients, 4 are rated safe and 0 are flagged for review. The manufacturer, Nature's Answer, holds a brand trust score of 78/100 with 5 verified certifications including Consumerlab, Fda Gmp Inspections, Non Gmo Project, Nsf Gmp.

What are the ingredients in Nature's Answer Resveratrol, 637 mg?

Nature's Answer Resveratrol, 637 mg contains 4 active ingredients: Vitamin C (as Ascorbic Acid) (60 mg), Japanese Knotweed (Polygonum cuspidatum) Root Extract (standardized for 50% Trans-Resveratrol, yielding 250 mg) (500 mg), Proprietary Cellular Longevity ComplexGrape Seed Extract (95% proanthocyanins), Red Wine Extract (30% Polyphenols), Grape Skin Extract (20% Polyphenols) Muscadine Grape Seed, Muscadine Grape Skin, Grape Fruit and Skin, Raspberry Fruit, Cranberry Fruit Juice Powder, Tart Cherry Fruit, Strawberry Fruit, Acai Fruit Pulp, Goji Fruit Juice Powder, Mangosteen Fruit, Pomegranate Fruit Extract, Green Tea Leaf Extract (95% Polyphenols, 60% EGCG), Fig Fruit, Wild Blueberry Fruit, Wild Bilberry Fruit, Prune Fruit. (110 mg), Quercetin (27 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Nature's Answer Resveratrol, 637 mg safe to take?

Nature's Answer Resveratrol, 637 mg, 60 Vegetarian 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 Nature's Answer a trustworthy supplement brand?

Nature's Answer receives a brand trust score of 78/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1972 and headquartered in Hauppauge, New York, United States, the company offers 234 products in their lineup. They hold 5 verified certifications including Consumerlab, Fda Gmp Inspections, Non Gmo Project, Nsf Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Nature's Answer has 3 historical regulatory incidents on record, which are factored into the trust score.

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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.