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Resveratrol 250 mg

Swanson Ultra
4.7
★ ★ ★ ★ ★
(482 ratings)
Resveratrol 250 mg
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Score65

A simple knotweed-derived capsule has a practical listed amount, but unconfirmed trans yield and refinement make potency uncertain.

How scoring works
Quantity:30 Capsule(s) • (30 servings)
Goals:

Score 65

A simple knotweed-derived capsule has a practical listed amount, but unconfirmed trans yield and refinement make potency uncertain.

How scoring works
$25.19($0.83 per serving)
iHerb
$ 25.19
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Analysis

The one-capsule formula supplies 250 mg resveratrol from Polygonum cuspidatum root. Its simple design avoids unrelated blend ingredients.

The listed amount appears to describe the source extract rather than a confirmed trans-resveratrol yield. Purity and removal of laxative anthraquinones are not reported.

Routine cost is moderate for a focused capsule. Better-characterized products disclose the trans amount directly and verify source refinement.

Who is it for
  • Adults seeking a basic knotweed resveratrol capsule
  • People comfortable with unverified trans yield
  • Users preferring a single ingredient
Best for
  • Simple daily supplementation
  • Users avoiding complex blends
  • General resveratrol intake

Pros

  • Focused one-ingredient design
  • Names the knotweed root source
  • Convenient capsule
  • Clear total extract amount

Cons

  • Trans-resveratrol yield is not confirmed
  • Purity is unstated
  • Emodin removal is unverified
  • No enhanced delivery

Warnings

  • Residual knotweed emodin may cause loose stools
  • Resveratrol may increase bleeding tendency with blood-thinning medicines

Nutrient quality

63 Moderate impact

<p>A basic knotweed extract does not confirm the preferred trans isomer, purity, or enhanced delivery. The extract weight is substantial, but the active trans-resveratrol dose cannot be determined.</p>.

Ingredient transparency

76 High impact

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

Customer satisfaction

68 High impact

<p>The average rating is consistently strong. The substantial feedback pool makes the average reasonably dependable.</p>.

Value for money

47 Lower impact

<p>The price lacks support from a verified active amount. Serving value cannot be established without trans-resveratrol yield.</p>.

Report analysis

Goals

Cardiovascular Support
Impact
Moderate effect
C+ Goal FitD+ Strength of SupportD- CoverageA+ Formula Quality

Resveratrol may support endothelial signaling and antioxidant protection. The knotweed extract weight appears substantial if it represents active trans-resveratrol.

Trans-isomer yield, purity, and emodin removal are not disclosed. Mixed human results and incomplete active-dose information make this a speculative cardiovascular option.

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Anti-Inflammatory Support
Impact
Moderate effect
C+ Goal FitC- Strength of SupportF CoverageA+ Formula Quality

Knotweed-derived resveratrol may influence inflammatory signaling and cellular stress pathways. The stated extract amount looks substantial, but the active trans-resveratrol yield is unknown.

Single-ingredient focus keeps the formula simple and free from padding. Missing isomer, purity, and emodin information prevents a reliable assessment of dose and form quality.

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Skin Health
Impact
Moderate effect
C+ Goal FitD Strength of SupportD- CoverageB- Formula Quality

Resveratrol provides a plausible antioxidant route to supporting skin resilience. Confidence is limited because the label states only knotweed extract and does not confirm active trans-resveratrol yield.

The single-ingredient design is focused but covers no structural or hydration pathway. Missing isomer, purity, and emodin-removal details make the effective contribution uncertain.

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Anti-Aging
Impact
Moderate effect
C Goal FitD- Strength of SupportD- CoverageB+ Formula Quality

Resveratrol is relevant to oxidative and metabolic pathways associated with healthy aging. The extract amount looks substantial, but the label does not confirm how much active trans-resveratrol it provides.

Unclear isomer content, purity, and emodin removal make the effective dose and evidence fit difficult to judge. The streamlined formula avoids padding but offers only narrow pathway coverage.

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Metabolism Boost
Impact
Moderate effect
D+ Goal FitD- Strength of SupportD- CoverageA Formula Quality

Resveratrol may influence mitochondrial signaling and insulin sensitivity, but human metabolic results are inconsistent. The listed knotweed extract amount cannot be treated as confirmed active resveratrol.

The label omits trans-isomer content, active yield, purity, and emodin-removal details. Those gaps make both effective dose and tolerability harder to judge despite the focused design.

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Ingredients

IngredientAmount per serving
Resveratrol (Polygonum cuspidatum root extract)
 250 mg
Adults 18–50
Report overview
Resveratrol (Polygonum cuspidatum root extract) · 250 mg OverallScore41
F Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyF Value

A substantial knotweed extract amount could be useful if it represents active trans-resveratrol. The label does not confirm the trans-isomer, active yield, purity percentage, or emodin removal. Standard capsule delivery and unquantifiable active-dose cost leave important uncertainty.

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