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Resveratrol & Quercetin with Grape Seed Extract

Swanson Ultra
4.8
★ ★ ★ ★ ★
(236 ratings)
Resveratrol 100 mg
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Score71
Substantial quercetin and grape-seed support create useful polyphenol breadth. Unconfirmed trans-resveratrol yield and source refinement remain important gaps.
How scoring works
Quantity:30 Capsule(s) • (30 servings)
Goals:
Skin Health
Metabolism Boost

Score 71

Substantial quercetin and grape-seed support create useful polyphenol breadth. Unconfirmed trans-resveratrol yield and source refinement remain important gaps.
How scoring works
$21.39($0.71 per serving)
iHerb
$ 21.39
iHerb
$ 21.39
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Analysis

Quercetin leads at 250 mg, followed by 100 mg grape-seed extract and 100 mg knotweed-root resveratrol. The formula therefore offers broader polyphenol coverage than a resveratrol-only capsule.

The resveratrol entry does not confirm the trans isomer or active yield. Grape-seed marker percentage and knotweed emodin removal are also not supplied.

A one-capsule serving is convenient, but value is best judged for the full polyphenol mix rather than resveratrol alone. Users focused specifically on trans-resveratrol can find clearer labels.

Who is it for
  • Adults seeking quercetin with resveratrol
  • People wanting broad grape polyphenols
  • Users not focused on a high trans-resveratrol dose
Best for
  • Combined polyphenol intake
  • Skin and metabolic wellness support
  • A one-capsule routine

Pros

  • Provides 250 mg quercetin
  • Includes grape-seed extract
  • Lists each active amount
  • Convenient capsule

Cons

  • Trans-resveratrol yield is not confirmed
  • Emodin removal is unknown
  • Grape-seed standardization is missing
  • Only moderate serving value

Warnings

  • Resveratrol, quercetin, and grape-seed compounds may increase bleeding tendency with blood-thinning medicines
  • Knotweed-derived material may cause loose stools if residual emodin is present

Nutrient quality

72 High impact

Quercetin dihydrate is specific, but the knotweed extract lacks active-isomer and delivery details. Quercetin and grape-seed amounts are useful, while active resveratrol dose cannot be determined.

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Ingredient transparency

81 Highest impact

Every listed active ingredient has a specific amount. Usage and inactive-ingredient details remain incomplete.

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Customer satisfaction

67 High impact

The average rating is exceptionally strong. The moderate feedback pool provides useful but limited confidence.

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Value for money

59 Moderate impact

The formula breadth adds value, but uncertain resveratrol potency weakens price justification. Serving cost is relatively high without a confirmed active resveratrol amount.

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Report analysis

Goals

Skin Health
Skin Health
Impact
High effect
C+ Goal FitD+ Strength of SupportC- CoverageA Formula Quality
Resveratrol · 100 mg

Quercetin, grape seed extract, and resveratrol provide focused polyphenol support against oxidative stress. The ingredients share plausible relevance to vascular and environmental skin resilience.

The resveratrol label does not disclose trans-isomer content, purity, active yield, or emodin removal. A standard dry capsule also provides no dedicated absorption support.

Study evidence
Resveratrol Supportive 7 studies
Metabolism Boost
Metabolism Boost
Impact
Moderate effect
C Goal FitD+ Strength of SupportC- CoverageA- Formula Quality
Resveratrol · 100 mg

Resveratrol, quercetin, and grape-seed polyphenols offer a coherent antioxidant and cell-signaling approach to insulin sensitivity and mitochondrial function. Human evidence for a noticeable metabolism effect is mixed and depends heavily on active form and dose.

The nominal amounts are useful for a polyphenol blend, but trans-resveratrol content, purity, and active yield are not disclosed. The product is focused and complementary, yet its practical metabolic potency remains uncertain.

Study evidence
Resveratrol Supportive 21 studies

Ingredients

IngredientAmount per serving
Quercetin (Quercetin Dihydrate)
 250 mg
Grape seed extract (Polyphenols)
 100 mg
Resveratrol (Polygonum cuspidatum root extract)
 100 mg
Adults 18–50 Vegetarian
Report overview
Resveratrol (Polygonum cuspidatum root extract) · 100 mg OverallScore35
F Active Ingredient Quality & BioavailabilityD Dose, Safety & Label TransparencyF Value

The nominal resveratrol amount falls in a supportive range and is paired with other polyphenols. Trans-isomer content, purity, active yield, and emodin removal are not disclosed. A standard capsule and unquantifiable active-dose cost make the resveratrol component difficult to judge.

View ingredientView products
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81 Performance

Resveratrol 500 mg

Solgar
<p>A substantial amount of clearly identified trans-resveratrol gives this focused formula meaningful depth. Compared with Resveratrol & Quercetin with Grape Seed Extract, the stronger ingredient assessment makes it a more dependable option for the same resveratrol-focused goals.</p>
80 Performance

Resveratrol Plus

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<p>A supportive trans-resveratrol dose is paired with grape and pine polyphenols for broader antioxidant coverage. Compared with Resveratrol & Quercetin with Grape Seed Extract, the stronger ingredient assessment makes it a more dependable option for the same resveratrol-focused goals.</p>
80 Performance

TransMax TR

Biotivia
<p>MicroActive delivery directly addresses resveratrol absorption while providing a substantial trans-resveratrol amount. Compared with Resveratrol & Quercetin with Grape Seed Extract, the stronger ingredient assessment makes it a more dependable option for the same resveratrol-focused goals.</p>
83 Budget

High Potency Trans-Resveratrol 600 mg

Doctor's Best
<p>A high amount of clearly identified trans-resveratrol provides strong depth at a favorable cost. Compared with Resveratrol & Quercetin with Grape Seed Extract, the lower serving cost improves value while retaining a resveratrol-centered formula.</p>
81 Budget

Resveratrol 250 mg with Red Wine Extract

Solgar
<p>A meaningful trans-resveratrol amount in a fat-containing softgel offers better delivery potential than a plain powder capsule. Compared with Resveratrol & Quercetin with Grape Seed Extract, the lower serving cost improves value while retaining a resveratrol-centered formula.</p>
80 Budget

Resveratrol 100 mg

Life Extension
<p>Trans-resveratrol from grape and knotweed plus quercetin creates a focused antioxidant combination at a low serving cost. Compared with Resveratrol & Quercetin with Grape Seed Extract, the lower serving cost improves value while retaining a resveratrol-centered formula.</p>
78 Value

Resveratrol 100 mg

Jarrow Formulas
<p>A long supply of resveratrol and vitamin C offers economical, modest antioxidant support. Compared with Resveratrol & Quercetin with Grape Seed Extract, it preserves similar formulation quality at a lower recurring cost.</p>
72 Value

Resveratrol With Pterostilbene 100 mg

Life Extension
<p>Trans-resveratrol and quercetin provide useful antioxidant support, but the repeated resveratrol entries make the total active amount ambiguous. Compared with Resveratrol & Quercetin with Grape Seed Extract, it preserves similar formulation quality at a lower recurring cost.</p>
72 Value

Resveratrol

youtheory
<p>A useful trans-resveratrol amount provides meaningful antioxidant coverage at an efficient serving cost. Compared with Resveratrol & Quercetin with Grape Seed Extract, it preserves similar formulation quality at a lower recurring cost.</p>
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Effects of resveratrol on glucose control and insulin sensitivity in subjects with type 2 diabetes: systematic review and meta-analysis.
    Zhu X; Wu C; Qiu S; Yuan X; Li L · Nutrition & metabolism · 2022
    Meta-analysis283 participants9 studies pooledMetabolism Boost forResveratrol
  2. Effects of resveratrol supplementation on multiple health outcomes: an umbrella review of systematic reviews and meta-analyses of randomized controlled trials.
    Sun JN; Yang R; Fang L; Li YJ; Xing WY; Sun ML; Wu L; Wu QJ; Gong TT · Nutrition journal · 2026
    Meta-analysis45 studies pooledMetabolism Boost forResveratrol
  3. Resveratrol improves insulin resistance, glucose and lipid metabolism in patients with non-alcoholic fatty liver disease: a randomized controlled trial.
    Chen S; Zhao X; Ran L; Wan J; Wang X; Qin Y; Shu F; Gao Y; Yuan L; Zhang Q; Mi M · Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver · 2015
    Randomized trial60 participantsMetabolism Boost forResveratrol
  4. Supplementation with resveratrol modified gut microbiota improving insulin sensitivity and lipid metabolism in subjects with obesity and insulin resistance.
    Guevara-Cruz M; Sánchez-Tapia M; Velazquez-Villegas LA; Torre-Villalvazo I; Guizar-Heredia R; Godínez-Salas E; López-Barradas A; Granados O; Torres-Villalobos G; Torres N; Tovar AR · European journal of nutrition · 2026
    Randomized trial32 participantsMetabolism Boost forResveratrol
  5. Efficacy of Resveratrol Supplementation on Glucose and Lipid Metabolism: A Meta-Analysis and Systematic Review.
    Zhou Q; Wang Y; Han X; Fu S; Zhu C; Chen Q · Frontiers in physiology · 2022
    Meta-analysis1,171 participants25 studies pooledMetabolism Boost forResveratrol
  6. Efficacy and safety of Resveratrol combined with Ablative Fractional CO2 laser system in the treatment of skin photoaging.
    Du YM; Zeng J; Li M; Wang YB; Wu Y; Qi RQ; Gao XH; Chen HD · Journal of cosmetic dermatology · 2021
    Non-randomized trial32 participantsSkin Health forResveratrol
  7. Exploring resveratrol-enriched collagen dressings for diabetic foot ulcers: A retrospective study of wound healing outcomes.
    Sezikli İ; Kendirci M · Journal of tissue viability · 2025
    Cohort study41 participantsSkin Health forResveratrol
  8. Enhanced antioxidant effect of trans-resveratrol: potential of binary systems with polyethylene glycol and cyclodextrin.
    Moyano-Mendez JR; Fabbrocini G; De Stefano D; Mazzella C; Mayol L; Scognamiglio I; Carnuccio R; Ayala F; La Rotonda MI; De Rosa G · Drug development and industrial pharmacy · 2016
    Clinical trialSkin Health forResveratrol
  9. Trans-resveratrol reduces visible signs of skin ageing in healthy adult females over 40: an 8-week randomized placebo-controlled trial.
    Rao A; Briskey D; Roche G; Tremblay A; Da Silva Pinto M; Tompkins TA · Frontiers in aging · 2026
    Randomized trial134 participantsSkin Health forResveratrol
  10. Resveratrol-Loaded Lipid Nanocarriers: Correlation between In Vitro Occlusion Factor and In Vivo Skin Hydrating Effect.
    Montenegro L; Parenti C; Turnaturi R; Pasquinucci L · Pharmaceutics · 2020
    Clinical trial12 participantsSkin Health forResveratrol