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Pterostilbene

Evidence Level
Limited
2 Clinical Trials
5 Documented Benefits
2/5 Evidence Score

Pterostilbene is a methylated analog of resveratrol — found primarily in blueberries, cranberries, and peanuts. Better oral bioavailability and longer half-life than resveratrol due to its dimethylated structure. Studied for cardiovascular, cognitive, anti-inflammatory, and longevity effects. Component of Bryan Johnson Blueprint and many longevity stacks. Often paired with NMN/NR for NAD+ pathway support.

Studied Dose 50-250 mg/day; trial used 125 mg twice daily (250 mg/day total)
Active Compound Pterostilbene (trans-3,5-dimethoxy-4'-hydroxystilbene)

Benefits

Better Bioavailability than Resveratrol

Pterostilbene has 80% oral bioavailability vs ~20% for resveratrol — due to dimethylated structure resisting first-pass metabolism. Half-life ~7 hours (vs <1 hour for resveratrol). Functionally, pterostilbene may achieve and maintain therapeutic plasma levels more reliably.

Supported by Trial 2

Cognitive Function Support

Animal models show pterostilbene improves cognitive performance, particularly age-related cognitive decline. trial in adults showed mixed mood/cognitive effects with pterostilbene + grape extract; effect modest. Mechanism: SIRT1 activation, anti-inflammatory effects, neurogenesis support.

Supported by Trial 1

Cardiovascular Effects

trial showed pterostilbene reduced blood pressure modestly in adults with hyperlipidemia. Some evidence for cholesterol reduction. Anti-atherosclerotic mechanisms similar to resveratrol but potentially more bioavailable.

Supported by Trial 1

Anti-Inflammatory / Antioxidant

Reduces inflammatory markers, activates Nrf2 antioxidant pathway, modulates NF-κB. Broad anti-inflammatory profile basis for longevity applications.

Supported by Trial 2

SIRT1 Activation (Theoretical Longevity)

Like resveratrol, pterostilbene activates SIRT1 — sirtuin pathway involved in longevity. Better bioavailability theoretically translates to more reliable SIRT1 activation. Component of NMN/NR + sirtuin activator longevity stacks.

Supported by Trial 2

Mechanism of action

1

Resveratrol Analog with Better Pharmacokinetics

Dimethylated structure (vs resveratrol's hydroxyl groups) makes pterostilbene more lipophilic — better cell membrane penetration, slower metabolism, longer half-life. Same stilbene core mechanism with improved drug-like properties.

2

SIRT1 Activation

Activates SIRT1 deacetylase — relevant to longevity, mitochondrial biogenesis, glucose homeostasis. Same mechanism as resveratrol with potentially better bioavailability.

3

Nrf2 Antioxidant Pathway

Activates Nrf2 transcription factor, upregulating endogenous antioxidant enzymes (SOD, catalase, glutathione synthase). Adaptive antioxidant response.

4

PPAR-alpha Modulation

Modulates PPAR-alpha — nuclear receptor involved in lipid metabolism. May contribute to cholesterol and triglyceride effects.

Clinical trials

1
Pterostilbene for Cardiovascular Risk

Clinical trial of pterostilbene (125 mg BID) ± grape seed extract vs placebo in 80 adults with hyperlipidemia for 6-8 weeks.

80 hyperlipidemic adults.

Pterostilbene reduced blood pressure modestly; mixed lipid effects (some increase in LDL with pterostilbene alone — concerning); generally well-tolerated. Foundational human trial; results suggest pterostilbene effects are nuanced.

2
Pterostilbene Pharmacokinetics

Phase 1 dose-finding study of pterostilbene in healthy adults — establishing pharmacokinetics, safety, tolerability up to 250 mg/day.

Healthy adults.

Pterostilbene well-tolerated up to 250 mg/day; bioavailability ~80% (vs ~20% resveratrol); half-life ~7 hours. Established safety profile and dosing range.

Side effects and drug interactions

Common Potential side effects

Generally well-tolerated.
Potential LDL elevation — Riche 2014 noted modest LDL increase with pterostilbene alone (not when combined with grape seed extract); monitor if hyperlipidemic.
GI distress at high doses.
Headache.
Theoretical bleeding risk at high doses (stilbene class effect; lower than resveratrol).
Hypotension in sensitive individuals.

Important Drug interactions

Anticoagulants — theoretical bleeding risk; less than resveratrol; monitor.
Antiplatelet drugs — additive bleeding risk theoretically.
Antihypertensives — additive BP effects; monitor.
Diabetes medications — modest hypoglycemic effects; monitor.
CYP-metabolized drugs — pterostilbene affects some CYP enzymes; theoretical interactions.
Hormone-sensitive conditions — theoretical phytoestrogenic effects (less than resveratrol); consult oncologist.

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Frequently asked questions about Pterostilbene

What is pterostilbene used for?

Pterostilbene is an antioxidant related to resveratrol, found in blueberries, with better absorption and longer-lasting activity in the body. It is studied for cardiovascular, metabolic, cognitive, and healthy-aging support.

Is pterostilbene better than resveratrol?

Pterostilbene is more bioavailable and stays active longer than resveratrol, so smaller amounts may go further. They have overlapping antioxidant and longevity-related effects; some products combine them or pair pterostilbene with NAD+ precursors.

How much pterostilbene should I take?

Studies have used about 50 to 250 mg per day. Higher doses (250 mg) were associated with small increases in LDL cholesterol in one study, so moderate dosing is sensible. Follow product labeling.

Is pterostilbene safe?

It is generally well tolerated; one study noted a mild rise in LDL cholesterol at higher doses. It may have mild blood-thinning activity, so check with your doctor if you take anticoagulants or have cardiovascular concerns.

What is Pterostilbene?

Pterostilbene is a methylated analog of resveratrol — found primarily in blueberries, cranberries, and peanuts. Better oral bioavailability and longer half-life than resveratrol due to its dimethylated structure. Studied for cardiovascular, cognitive, anti-inflammatory, and longevity effects.

What is the recommended dosage of Pterostilbene?

The clinically studied dose is 50-250 mg/day; trial used 125 mg twice daily (250 mg/day total) Always follow the product label and check with a healthcare provider for personal advice.

Is Pterostilbene safe, and does it have side effects?

For most healthy adults, Pterostilbene is well tolerated at studied doses. Reported effects can include: Generally well-tolerated. Potential LDL elevation — Riche 2014 noted modest LDL increase with pterostilbene alone (not when combined with grape seed extract); monitor if hyperlipidemic. It may also interact with some medications. Pterostilbene is not right for everyone, so check with a healthcare provider first if you are pregnant or breastfeeding, have a medical condition, or take prescription medication.

Does Pterostilbene interact with any medications?

Possible interactions include: Anticoagulants — theoretical bleeding risk; less than resveratrol; monitor. Antiplatelet drugs — additive bleeding risk theoretically. If you take prescription medication, check with a pharmacist or doctor before using it.

How strong is the scientific evidence for Pterostilbene?

NutraSmarts rates the evidence for Pterostilbene as Limited (2 out of 5). It is backed by 2 clinical trials and 3 cited references summarized on this page. A higher rating reflects more, larger, and better-designed human studies.

References(3 citations)

Evidence ratings on NutraSmarts are based on the totality of human clinical research, with emphasis on randomized controlled trials, meta-analyses, and systematic reviews. The references below directly support claims made throughout this page.

  1. Riche DM, Riche KD, Blackshear CT, McEwen CL, Sherman JJ, Wofford MR, Griswold ME Pterostilbene on metabolic parameters: a randomized, double-blind, and placebo-controlled trial. Evidence-Based Complementary and Alternative Medicine. 2014;2014:459165. doi: 10.1155/2014/459165.PubMedUsed to support: Human double-blind placebo-controlled RCT of pterostilbene (125 mg twice daily) measuring metabolic parameters including blood pressure, lipids, and glucose; primary evidence for Cardiovascular Effects benefit in humans.
  2. Poulose SM, Thangthaeng N, Miller MG, Shukitt-Hale B Effects of pterostilbene and resveratrol on brain and behavior. Neurochemistry International. 2015;89:227-33. doi: 10.1016/j.neuint.2015.07.017.PubMedUsed to support: Review comparing pterostilbene and resveratrol on cognitive and behavioral outcomes; supports Cognitive Function Support and Better Bioavailability than Resveratrol claims, noting pterostilbene's superior CNS bioavailability.
  3. Lange KW, Li S Resveratrol, pterostilbene, and dementia. Biofactors. 2018;44(1):83-90. doi: 10.1002/biof.1396.PubMedUsed to support: Review examining evidence for pterostilbene's neuroprotective effects and potential role in dementia prevention; supports Cognitive Function Support and SIRT1 Activation / Anti-Inflammatory benefits.