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Resveratrol supplement
Polyphenol

Resveratrol: Benefits, Dosage, Forms & Research

Polyphenol

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

TL;DR — Quick Answer

Resveratrol at 150-500mg daily (trans-resveratrol form) reduces CRP by 15-25% and improves metabolic markers. It works by activating SIRT1, inhibiting NF-kB, and suppressing COX-2. Choose micronized or lipid-based formulations for better absorption.

Key Facts

What it is
A stilbene polyphenol found in grape skins, red wine, and Japanese knotweed
Primary benefits
  • Activates SIRT1 and AMPK signaling
  • Inhibits NF-kB inflammatory pathway
  • Reduces CRP and IL-6 levels
  • Improves insulin sensitivity
  • Potential cardiovascular protection
Typical dosage
150-500mg trans-resveratrol daily
Evidence level
Moderate
Safety profile
Generally Safe

What the Research Says

Resveratrol gained fame from the "French Paradox" hypothesis and has since been studied in over 200 clinical trials. A comprehensive meta-analysis by Koushki et al. (2019, 17 RCTs, n=736) confirmed significant reductions in CRP and TNF-alpha. For metabolic health, Mousavi et al. (2019, 28 RCTs) demonstrated improvements in glucose, insulin, and HbA1c in diabetic patients. The primary challenge is low oral bioavailability (~1-2%), with extensive first-pass metabolism converting resveratrol to glucuronide and sulfate conjugates. However, these metabolites may also have biological activity. Newer formulations (micronized, liposomal) aim to improve absorption. Resveratrol remains one of the most promising anti-inflammatory polyphenols with multi-target activity.

Benefits of Resveratrol

  • Inflammatory marker reduction — a 2019 meta-analysis (Koushki et al., 17 RCTs, n=736) found resveratrol significantly reduced CRP and TNF-alpha levels, particularly at doses ≥150mg/day for ≥8 weeks
  • SIRT1 activation — resveratrol directly activates sirtuin 1, a NAD+-dependent deacetylase that suppresses NF-kB transcription and promotes anti-inflammatory gene expression
  • Metabolic improvement — a 2019 meta-analysis (Mousavi et al., 28 RCTs) found resveratrol improved fasting glucose, insulin, HbA1c, and insulin resistance in type 2 diabetes patients
  • COX-2 suppression — resveratrol inhibits COX-2 expression at the transcriptional level, reducing prostaglandin E2 production without affecting protective COX-1
  • Endothelial function — clinical trials show resveratrol improves flow-mediated dilation and reduces arterial stiffness through enhanced nitric oxide bioavailability
Did you know?

Resveratrol gained fame from the "French Paradox" hypothesis and has since been studied in over 200 clinical trials.

Forms of Resveratrol

FormBioavailabilityBest For
Trans-Resveratrol (standard)LowMost studied form — well-researched but low oral bioavailability (~1-2%)
Micronized ResveratrolModerateEnhanced absorption — particle size reduction improves dissolution and uptake
Liposomal ResveratrolHighMaximum absorption — lipid encapsulation protects from first-pass metabolism

Dosage Recommendations

General recommendation: 150-500mg trans-resveratrol daily

Timing: Take with a meal containing fat to improve absorption; morning dosing preferred for metabolic benefits • Take with food for best absorption.

Dosage by Condition

ConditionRecommended DoseEvidence
General anti-inflammatory150-300mg dailyModerate
Metabolic syndrome / diabetes250-500mg dailyModerate
Cardiovascular support150-500mg dailyEmerging

Upper limit: Up to 1,500mg/day has been used in clinical trials; GI side effects increase above 1g/day

Side Effects and Safety

Safety profile: Generally Safe

Potential Side Effects

  • Gastrointestinal discomfort (diarrhea, nausea, cramping) at doses >1g/day
  • Headache (uncommon)
  • May act as a phytoestrogen at high doses — relevance uncertain
  • Rare: insomnia if taken late in the day

Drug & Supplement Interactions

  • Anticoagulants — resveratrol has mild antiplatelet activity; monitor with warfarin or aspirin
  • CYP3A4/CYP1A2 substrates — resveratrol may inhibit these enzymes, affecting drug metabolism
  • Estrogen-sensitive conditions — high-dose resveratrol has weak estrogenic activity; discuss with oncologist if relevant
Check Resveratrol interactions with other supplements →
BenefitsDosage GuideSide EffectsTypes & FormsResearchFAQ

Related Conditions

Inflammation

Related Supplements

QuercetinGreen Tea ExtractTurmeric / Curcumin

Frequently Asked Questions

Can I get enough resveratrol from red wine?

No. Red wine contains only 1-7mg resveratrol per liter. To get a clinical dose of 150-500mg, you would need to drink 20-500 glasses daily — obviously impractical and unhealthy. Supplementation is the only way to achieve therapeutic levels.

What is the difference between trans- and cis-resveratrol?

Trans-resveratrol is the biologically active form studied in clinical trials. Cis-resveratrol is less stable and less studied. Quality supplements use trans-resveratrol, often from Japanese knotweed (Polygonum cuspidatum), which is the richest supplemental source.

Does resveratrol actually extend lifespan?

Resveratrol extends lifespan in yeast, worms, and some fish studies, but no human longevity data exists. It does activate SIRT1 (a longevity-associated enzyme) and improve metabolic markers in humans. Whether this translates to lifespan extension remains unproven.

References

  1. (). Effect of resveratrol supplementation on inflammatory markers: a systematic review and meta-analysis of randomized controlled trials. Clinical Therapeutics. DOI
  2. (). Resveratrol supplementation significantly influences obesity measures: a systematic review and dose-response meta-analysis of randomized controlled trials. Obesity Reviews. DOI
  3. (). The therapeutic potential of resveratrol: a review of clinical trials. NPJ Precision Oncology. DOI