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Resveratrol 100 mg

Swanson
4.6
★ ★ ★ ★ ★
(1129 ratings)
Resveratrol 100 mg
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Score74

A simple modest-dose capsule is easy to use, but nearly every resveratrol quality detail is absent.

How scoring works
Quantity:30 Capsule(s) • (30 servings)
Goals:
Metabolism Boost
Skin Health

Score 74

A simple modest-dose capsule is easy to use, but nearly every resveratrol quality detail is absent.

How scoring works
$11.09($0.36 per serving)
iHerb
$ 11.09
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Analysis

Each capsule lists 100 mg resveratrol from Japanese knotweed root extract. The amount is modest and the formula contains no supporting actives.

The label does not confirm trans-resveratrol content or knotweed purity. No absorption enhancer or emodin-removal statement is provided.

Thirty single-capsule servings offer a short, simple trial. It fits budget-focused users who accept basic labeling, not those seeking well-characterized resveratrol.

Who is it for
  • Adults seeking a basic 100 mg capsule
  • Users testing resveratrol short term
  • People comfortable with limited form disclosure
Best for
  • Short trial use
  • Basic antioxidant supplementation
  • Users who do not need enhanced delivery

Pros

  • Single active ingredient
  • One-capsule serving
  • Clear source plant
  • Modest amount may be easier to tolerate

Cons

  • Trans-isomer content is missing
  • Purity is not stated
  • No enhanced absorption
  • Only 30 servings

Warnings

  • Resveratrol may increase bleeding with anticoagulant or antiplatelet medicines
  • Japanese knotweed may cause laxative effects when emodin removal is not verified
  • Users with sensitive digestion should assess tolerance

Nutrient quality

70 High impact

The focused single-active design is easy to understand and conservatively dosed. Missing active-isomer and purity details prevent a reliable quality assessment.

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

71 High impact

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

Value for money

77 High impact

The formula provides fair value for its cost. It remains moderately competitive but does not clearly lead the category.

Report analysis

Goals

Metabolism Boost
Impact
Moderate effect
D Goal FitD- Strength of SupportF CoverageA Formula Quality
Resveratrol · 100 mg

Resveratrol has plausible links to insulin sensitivity and cellular stress signaling, but human metabolic results are inconsistent. A nominal 100 mg amount may provide supportive exposure without offering direct thermogenesis.

The label does not state trans-resveratrol yield, purity, or emodin removal from the knotweed extract. Those omissions make the effective active dose uncertain despite a simple, focused formula.

Study evidence
Resveratrol Supportive 21 studies
Skin Health
Impact
Moderate effect
F Goal FitC- Strength of SupportF CoverageB- Formula Quality
Resveratrol · 100 mg

Resveratrol offers a narrow antioxidant pathway with only indirect relevance to visible skin outcomes. Human oral resveratrol evidence for hydration, wrinkles, or barrier function remains limited compared with established skin actives.

The single antioxidant does not provide collagen building blocks, barrier lipids, or direct hydration support. The one-ingredient design is internally coherent and easy to assess.

Study evidence
Resveratrol Supportive 7 studies

Ingredients

IngredientAmount per serving
Resveratrol (Polygonum cuspidatum root extract)
100 mg
Adults 18–50
Report overview
F Active Ingredient Quality & BioavailabilityD Dose, Safety & Label TransparencyF Value

The nominal resveratrol amount falls in the supportive range at a favorable serving cost. Trans-isomer content, purity, active yield, and emodin removal are not disclosed. Standard capsule delivery leaves value dependent on an active amount the label does not confirm.

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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 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