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Purple Defense with Resveratrol

Dr. Mercola
4.8
★ ★ ★ ★ ★
(61 ratings)
Resveratrol 50 mg
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Score49

A light, unverified resveratrol amount and opaque antioxidant blend make this a weak focused option.

How scoring works
Quantity:90 Capsule(s) • (90 servings)
Goals:

Score 49

A light, unverified resveratrol amount and opaque antioxidant blend make this a weak focused option.

How scoring works
$56.25($0.62 per serving)
Vitacost
$ 56.25
iHerb
$ 56.91
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Analysis

The formula supplies 50 mg resveratrol from Japanese knotweed root extract. That is a light amount and the label does not confirm how much is the active trans isomer.

A 400 mg antioxidant blend forms most of the active material but does not disclose its components or individual amounts. This prevents meaningful quality or safety comparison.

Ninety single-capsule servings support convenience, yet the product is poorly suited to focused resveratrol use. It fits only buyers who accept an opaque broad-antioxidant formula.

Who is it for
  • Adults seeking a general antioxidant blend
  • Users who do not need a meaningful resveratrol dose
  • People comfortable with proprietary formulas
Best for
  • Broad antioxidant routines
  • Single-capsule convenience
  • Users prioritizing a long package supply

Pros

  • Ninety servings
  • Single-capsule format
  • Identifies Japanese knotweed source
  • Includes broader antioxidant material

Cons

  • Only 50 mg resveratrol
  • Trans-isomer content is unknown
  • Antioxidant blend is proprietary
  • No enhanced delivery

Warnings

  • The proprietary blend prevents full interaction and sensitivity screening
  • Resveratrol may add to anticoagulant or antiplatelet effects
  • Japanese knotweed lacks an emodin-removal statement and may cause digestive effects

Nutrient quality

53 Moderate impact

The antioxidant theme is plausible and the disclosed resveratrol amount is conservative. Low active depth and an opaque blend substantially limit formula quality.

Ingredient transparency

43 Lower impact

Some totals are visible, but a proprietary blend hides important individual doses. Vague blend naming, missing directions, and undisclosed excipients substantially limit transparency.

Customer satisfaction

66 High impact

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

Value for money

36 Lower 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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Ingredients

IngredientAmount per serving
Dr. Mercola's Antioxidant Blend
400 mg
Resveratrol (Polygonum cuspidatum root extract)
 50 mg
Adults 18–50
Report overview
Resveratrol (Polygonum cuspidatum root extract) · 50 mg OverallScore29
F Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyF Value

A low nominal resveratrol amount is included in a standard capsule. Trans-isomer content, purity, active yield, and emodin removal are not disclosed. Without those details, active-dose value and likely exposure remain uncertain.

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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 Purple Defense with Resveratrol, 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 Purple Defense with Resveratrol, 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 Purple Defense with Resveratrol, the stronger ingredient assessment makes it a more dependable option for the same resveratrol-focused goals.</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 Purple Defense with Resveratrol, 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 Purple Defense with Resveratrol, 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 Purple Defense with Resveratrol, 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 Purple Defense with Resveratrol, 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 Purple Defense with Resveratrol, 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 Purple Defense with Resveratrol, it preserves similar formulation quality at a lower recurring cost.</p>
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