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Resveratrol-50

DaVinci Laboratories
4.5
★ ★ ★ ★ ★
(11 ratings)
Resveratrol 200 mg
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Score71

A long-supply knotweed capsule lacks the active-yield detail needed to judge its true resveratrol value.

How scoring works
Quantity:120 Capsule(s) • (120 servings)
Goals:
Anti-Aging

Score 71

A long-supply knotweed capsule lacks the active-yield detail needed to judge its true resveratrol value.

How scoring works
$51.78($0.43 per serving)
iHerb
$ 51.78
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Analysis

Each capsule lists 200 mg Japanese knotweed extract associated with resveratrol. The actual resveratrol yield and trans-isomer percentage are not stated.

No enhanced-delivery system or supporting ingredient is included. Knotweed purity and emodin removal are also unverified.

One hundred twenty servings provide strong package duration, but the serving cost is difficult to justify without active-yield clarity. It suits users comfortable with source-extract labeling rather than precise dosing.

Who is it for
  • Adults comfortable with extract-based labeling
  • Users wanting a long package supply
  • People who do not require exact trans-resveratrol dosing
Best for
  • Basic knotweed supplementation
  • Long-term package convenience
  • Users prioritizing simple capsules

Pros

  • One hundred twenty servings
  • Single-capsule format
  • Identifies Japanese knotweed
  • Simple active list

Cons

  • Active resveratrol yield is unknown
  • Trans-isomer is not confirmed
  • No enhanced delivery
  • Emodin removal is unverified

Warnings

  • Resveratrol may increase bleeding tendency with anticoagulant or antiplatelet medicines
  • Japanese knotweed may cause laxative effects if emodin is not removed
  • Do not assume the 200 mg extract equals 200 mg active resveratrol

Nutrient quality

78 High impact

A potentially useful nominal amount and focused design support moderate ingredient quality. Missing active-isomer, purity, and delivery details prevent confidence in actual exposure.

Ingredient transparency

79 High impact

Active quantities are stated and no hidden blend obscures the formula. Missing form details, full directions, and non-active ingredients reduce label completeness.

Customer satisfaction

55 Moderate impact

The supplied average rating is strong and the rating volume is limited. No specific experience details were provided to judge repeated complaints or purpose alignment.

Value for money

65 High impact

Weak specification or limited active depth makes value difficult to establish. Better-specified or more efficiently dosed alternatives are more competitive.

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Goals

Anti-Aging
Anti-Aging
Impact
High effect
B- Goal FitC Strength of SupportC CoverageA+ Formula Quality

Resveratrol targets oxidative stress, inflammatory signaling, and cellular stress responses that are often discussed in healthy aging. The 200 mg nominal amount could be meaningful if it represents well-characterized active compound.

The label does not confirm trans-resveratrol yield, purity, or emodin control, so actual potency and tolerability are uncertain. Human evidence for broad longevity benefits also remains mixed and indirect.

Study evidence
Resveratrol No effect 7 studies
Skin Health
Skin Health
Impact
Moderate effect
C+ Goal FitD+ Strength of SupportD- CoverageA+ Formula Quality
Resveratrol · 200 mg

Resveratrol may support skin antioxidant defenses and resilience to environmental stress. The nominal extract amount appears meaningful if it represents active resveratrol.

The label does not confirm trans-resveratrol yield, purity, or emodin removal. The single-ingredient design is focused but offers no structural or hydration pathway.

Study evidence
Resveratrol Supportive 7 studies
Anti-Inflammatory Support
Anti-Inflammatory Support
Impact
Moderate effect
C+ Goal FitC- Strength of SupportF CoverageA+ Formula Quality

Knotweed-derived resveratrol offers a plausible connection to inflammatory signaling and oxidative stress. The simple formula keeps its purpose clear.

The label does not confirm trans-resveratrol yield, purity, or emodin control, so active exposure is uncertain. Evidence for broad anti-inflammatory benefit is also less consistent than for curcumin or omega-3s.

Study evidence
Resveratrol Supportive 34 studies
Cardiovascular Support
Cardiovascular Support
Impact
Moderate effect
D+ Goal FitC Strength of SupportD- CoverageA Formula Quality

Resveratrol may support endothelial antioxidant signaling and vascular function. Human cardiovascular outcomes remain inconsistent, and the product does not address lipids, rhythm, or nitric oxide directly.

The nominal amount is substantial, but the label does not confirm trans-resveratrol yield or purity. The single-ingredient design is focused while its effective active dose remains uncertain.

Study evidence
Resveratrol Supportive 73 studies
Metabolism Boost
Metabolism Boost
Impact
Moderate effect
D- Goal FitD+ Strength of SupportD- CoverageA- Formula Quality
Resveratrol · 200 mg

Two hundred milligrams of knotweed-derived resveratrol may support insulin sensitivity and cellular stress responses, but it is not a direct thermogenic agent. Evidence for meaningfully increasing metabolic rate or fat oxidation remains inconsistent.

The label does not confirm trans-resveratrol content, purity, or emodin testing, so the active dose is uncertain. The streamlined capsule avoids padding but provides only one indirect metabolic pathway.

Study evidence
Resveratrol Supportive 21 studies

Ingredients

IngredientAmount per serving
Resveratrol (Polygonum cuspidatum extract)
 200 mg
Gluten Free Adults 18–50 Vegetarian
Report overview
Resveratrol (Polygonum cuspidatum extract) · 200 mg OverallScore35
F Active Ingredient Quality & BioavailabilityD Dose, Safety & Label TransparencyF Value

Knotweed extract names resveratrol without confirming the trans isomer or purity. The capsule offers standard delivery, while the nominal serving is supportive if it represents active compound. Missing emodin verification and unspecified trans yield prevent a reliable value assessment.

View ingredientView products
Loading alternative details
83 Performance

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-50, the stronger ingredient assessment makes it a more dependable option for the same resveratrol-focused goals.</p>
81 Performance

Resveratrol 500 mg

Solgar
<p>A substantial amount of clearly identified trans-resveratrol gives this focused formula meaningful depth. Compared with Resveratrol-50, 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-50, the stronger ingredient assessment makes it a more dependable option for the same resveratrol-focused goals.</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-50, the lower serving cost improves value while retaining a resveratrol-centered formula.</p>
80 Budget

Resveratrol Plus

Country Life
<p>A supportive trans-resveratrol dose is paired with grape and pine polyphenols for broader antioxidant coverage. Compared with Resveratrol-50, the lower serving cost improves value while retaining a resveratrol-centered formula.</p>
79 Budget

Resveratrol

NutraMedix
<p>Clearly named trans-resveratrol and red-wine polyphenols form a focused antioxidant formula at useful amounts. Compared with Resveratrol-50, 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-50, 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-50, 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-50, it preserves similar formulation quality at a lower recurring cost.</p>
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Sources

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

  1. Effects of resveratrol on memory performance, hippocampal functional connectivity, and glucose metabolism in healthy older adults.
    Witte AV; Kerti L; Margulies DS; Flöel A · The Journal of neuroscience : the official journal of the Society for Neuroscience · 2014
    Randomized trial46 participantsAnti-Aging forResveratrol
  2. Effects of resveratrol on memory performance, hippocampus connectivity and microstructure in older adults - A randomized controlled trial.
    Huhn S; Beyer F; Zhang R; Lampe L; Grothe J; Kratzsch J; Willenberg A; Breitfeld J; Kovacs P; Stumvoll M; Trampel R; Bazin PL; Villringer A; Witte AV · NeuroImage · 2019
    Randomized trial60 participantsAnti-Aging forResveratrol
  3. Resveratrol levels and all-cause mortality in older community-dwelling adults.
    Semba RD; Ferrucci L; Bartali B; Urpí-Sarda M; Zamora-Ros R; Sun K; Cherubini A; Bandinelli S; Andres-Lacueva C · JAMA internal medicine · 2014
    Cohort study783 participantsAnti-Aging forResveratrol
  4. Impact of Resveratrol Supplementation on Human Sirtuin 1: A Grading of Recommendations Assessment, Development and Evaluation-Assessed Systematic Review and Dose-Response Meta-Analysis of Randomized Controlled Trials.
    Mansouri F; Feliziani G; Bordoni L; Gabbianelli R · Journal of the Academy of Nutrition and Dietetics · 2025
    Meta-analysis11 studies pooledAnti-Aging forResveratrol
  5. 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 participantsAnti-Aging Skin Health forResveratrol
  6. Role of resveratrol supplementation in regulation of glucose hemostasis, inflammation and oxidative stress in patients with diabetes mellitus type 2: A randomized, placebo-controlled trial.
    Mahjabeen W; Khan DA; Mirza SA · Complementary therapies in medicine · 2022
    Randomized trial110 participantsAnti-Inflammatory Support forResveratrol
  7. Resveratrol decreases local inflammatory markers and systemic endotoxin in patients with aggressive periodontitis.
    Zhang Q; Xu S; Xu W; Zhou Y; Luan H; Wang D · Medicine · 2022
    Randomized trial160 participantsAnti-Inflammatory Support forResveratrol
  8. Effects of resveratrol supplementation on inflammatory markers, fatigue scale, fasting blood sugar and lipid profile in relapsing-remitting multiple sclerosis patients: a double-blind, randomized placebo-controlled trial.
    Keramatzadeh S; Hosseini SA; Majdinasab N; Cheraghian B; Zilaee M · Nutritional neuroscience · 2025
    Randomized trial55 participantsAnti-Inflammatory Support forResveratrol
  9. One-year consumption of a grape nutraceutical containing resveratrol improves the inflammatory and fibrinolytic status of patients in primary prevention of cardiovascular disease.
    Tomé-Carneiro J; Gonzálvez M; Larrosa M; Yáñez-Gascón MJ; García-Almagro FJ; Ruiz-Ros JA; García-Conesa MT; Tomás-Barberán FA; Espín JC · The American journal of cardiology · 2012
    Randomized trial75 participantsAnti-Inflammatory Support forResveratrol
  10. Effects of resveratrol supplementation on risk factors of non-communicable diseases: A meta-analysis of randomized controlled trials.
    Guo XF; Li JM; Tang J; Li D · Critical reviews in food science and nutrition · 2019
    Meta-analysis1,069 participants29 studies pooledAnti-Inflammatory Support forResveratrol
  11. Consumption of a grape extract supplement containing resveratrol decreases oxidized LDL and ApoB in patients undergoing primary prevention of cardiovascular disease: a triple-blind, 6-month follow-up, placebo-controlled, randomized trial.
    Tomé-Carneiro J; Gonzálvez M; Larrosa M; García-Almagro FJ; Avilés-Plaza F; Parra S; Yáñez-Gascón MJ; Ruiz-Ros JA; García-Conesa MT; Tomás-Barberán FA; Espín JC · Molecular nutrition & food research · 2012
    Randomized trial75 participantsCardiovascular Support forResveratrol
  12. Resveratrol improves lipid profile and recovers heart function in postoperative CABG patients.
    Ahmadi P; Akbarzadeh S; Alizadeh M; Mohammadi N; Mahmoodi M; Amini A; Netticadan T; Rezaei M; Movahed A · Molecular and cellular biochemistry · 2025
    Randomized trial60 participantsCardiovascular Support forResveratrol
  13. Resveratrol Supplementation and its Potential Benefits in Obesity-related Non-communicable Diseases.
    Shen CY; Li CP; Yu JT; Ho YJ; Tsai RY · In vivo (Athens, Greece) · 2026
    Meta-analysis2,551 participants40 studies pooledCardiovascular Support forResveratrol
  14. Chronic resveratrol consumption improves brachial flow-mediated dilatation in healthy obese adults.
    Wong RH; Berry NM; Coates AM; Buckley JD; Bryan J; Kunz I; Howe PR · Journal of hypertension · 2014
    Randomized trial28 participantsCardiovascular Support forResveratrol
  15. Effect of resveratrol supplementation on lipid profile in subjects with dyslipidemia: A randomized double-blind, placebo-controlled trial.
    Simental-Mendía LE; Guerrero-Romero F · Nutrition (Burbank, Los Angeles County, Calif.) · 2020
    Randomized trial71 participantsCardiovascular Support forResveratrol
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. 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
  22. 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
  23. 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
  24. 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