Pterostilbene is a naturally occurring stilbenoid and a dimethylated structural analog of resveratrol found chiefly in blueberries and grapes. Its two methoxy groups make it more lipophilic and metabolically stable than resveratrol, giving it markedly higher oral bioavailability. It is studied for antioxidant, anti-inflammatory, metabolic, and putative longevity-related effects, and is frequently paired with NAD precursors such as nicotinamide riboside.
Investigated for cardiovascular and cognitive support1,6
Used in longevity stacks to support sirtuin and AMPK activity3,4
What to watch for
Generally well tolerated at studied doses
Possible mild gastrointestinal upset
Dose-dependent increase in LDL cholesterol observed at higher intakes (e.g., 250 mg/day) when taken without other agents
Pregnancy and breastfeeding (insufficient safety data)2
Caution with anticoagulant or antiplatelet medications due to possible additive effects
The bottom line
Evidence rating emerging. Most-documented uses: provides antioxidant support by boosting endogenous defenses (nrf2), supports healthy lipid and blood glucose metabolism, may reduce markers of systemic inflammation. 8 sources indexed (2011–2018), with 5 interaction records on file.
The science
How it works, mechanistically.
Core mechanism
Pterostilbene acts as a direct free-radical scavenger and, more importantly, as an indirect antioxidant by activating the Nrf2-ARE pathway, which upregulates endogenous antioxidant and phase II detoxification enzymes. It modulates several nutrient-sensing and stress-response pathways implicated in cellular aging, including activation of AMP-activated protein kinase (AMPK) and SIRT1, and inhibition of NF-kB-driven inflammatory signaling. Compared with resveratrol, the substitution of two hydroxyl groups with methoxy groups increases membrane permeability and slows glucuronidation and sulfation, prolonging plasma exposure and enhancing intracellular delivery.1,2
Class
Polyphenol (Stilbenoid)
Found in food
Blueberries, Grapes, Almonds
Absorption
Fat-soluble; take with food
Dosing
Dosing & protocol.
Common range
50-250 mg per day; most human trials used 50-125 mg once or twice daily
Recommended form
trans-Pterostilbene in capsule form, often standardized (e.g., pTeroPure); best taken with a fat-containing meal
Lipophilic and well absorbed orally, with roughly 80 percent bioavailability in animal models versus about 20 percent for resveraltrol. Taking it with dietary fat may further support uptake. Methoxylation slows phase II metabolism, extending plasma half-life relative to resveratrol.1
Forms
Forms & what to buy.
Ranked by evidence and value.
Pterostilbene (free powder/capsule) Recommended
Pterostilbene is a dimethylated analog of resveratrol; the two methoxy groups increase lipophilicity and resistance to phase II glucuronidation/sulfation, giving substantially higher oral bioavailability and a longer half-life than resveratrol in animal pharmacokinetic studies. Lipophilic, so absorption is improved when taken with a fat-containing meal.
Mid50-125 mg once or twice daily
Pterostilbene + NMN/NR combination
Pterostilbene itself is unchanged; the combination pairs a sirtuin-activating polyphenol with an NAD+ precursor (nicotinamide mononucleotide or nicotinamide riboside). Pterostilbene typically supplies the resveratrol-like component at 50-100 mg per dose. Same fat-meal guidance applies; co-dosing does not meaningfully change pterostilbene kinetics.
Premium50-100 mg pterostilbene per serving
Pterostilbene with piperine (BioPerine)
Piperine inhibits glucuronidation and may modestly raise circulating polyphenol levels, though pterostilbene is already less glucuronidated than resveratrol so the added benefit is smaller than for resveratrol. Piperine can affect cytochrome P450 metabolism of co-administered drugs; use caution with prescription medications.
Mid50-100 mg pterostilbene plus ~5 mg piperine
Cost
What it actually costs.
Real-world pricing across three quality tiers. Assumes Pterostilbene free capsule (50-100 mg).
BudgetBest value
$5 /mo
$0.15 per dose
Mid
$11 /mo
$0.35 per dose
Premium
$24 /mo
$0.80 per dose
Standalone pterostilbene is moderately priced; cost rises sharply when bundled with NMN or NR in NAD+ stacks, which sit at the premium tier. Prices reflect typical US retail per effective daily dose (~100 mg). Updated 2026-06-04.
Sirtuin activation and NAD+-pathway support are extrapolated largely from preclinical and short human trials; durable lifespan or healthspan benefit in humans is not established.
A human trial used 125 mg twice daily; LDL cholesterol lowering was seen, but a small blood-pressure increase was observed at the higher dose, so monitor blood pressure.
A dimethylated resveratrol analog with greater oral bioavailability and lipophilicity; activates Nrf2 antioxidant response elements and SIRT1, increasing endogenous antioxidant enzyme expression and scavenging reactive oxygen species in preclinical work.7,1
Activates AMPK and SIRT1 signaling and may improve insulin sensitivity in preclinical models; small human data suggest modest effects on glycemic markers, though results are inconsistent.4,1
CardiometabolicEmerging evidenceStandardized pterostilbene capsule, typically 50-100 mg daily with food
Human evidence is limited and mixed. Not a substitute for established glycemic therapy; people on antidiabetic drugs should monitor for additive lowering of blood glucose.
May modulate lipid metabolism via PPAR-alpha activation and AMPK signaling; a randomized human trial reported small LDL changes, but pterostilbene alone slightly raised LDL while a pterostilbene plus grape extract combination did not.1,4
Evidence is preliminary and somewhat conflicting. Effects on LDL warrant lipid monitoring rather than reliance on pterostilbene for cholesterol control.
May support endothelial function and nitric oxide signaling and reduce vascular oxidative stress in preclinical models; one human trial observed blood pressure changes with pterostilbene supplementation.3,5
A methylated, more bioavailable analog of resveratrol that activates sirtuins (notably SIRT1), the NAD+-dependent deacetylases through which elevated NAD+ is thought to exert many of its benefits; commonly paired with NAD+ precursors in human trials.5,8
Safety
Full safety detail.
Side effects
Generally well tolerated at studied doses
Possible mild gastrointestinal upset
Dose-dependent increase in LDL cholesterol observed at higher intakes (e.g., 250 mg/day) when taken without other agents
Headache or dizziness reported infrequently
Contraindications
Pregnancy and breastfeeding (insufficient safety data)2
Caution with anticoagulant or antiplatelet medications due to possible additive effects
Caution in people with elevated LDL cholesterol or on lipid-management therapy1,4
May potentiate antidiabetic medications, increasing risk of hypoglycemia
Pterostilbene is the dimethylated analog of resveratrol with markedly higher oral bioavailability and a longer half-life. The two share overlapping mechanisms, including SIRT1 activation and antioxidant signaling, so combining them is mechanistically redundant rather than additive in distinct pathways.
Recommendation: There is no clear advantage to stacking both; pterostilbene's superior bioavailability often makes it the practical choice. If both are used, keep total dosing modest and avoid assuming the effects simply add together.
Pterostilbene is frequently paired with NAD precursors to support sirtuin activity. Methyl-group sufficiency, supported by B12 and folate, becomes relevant during this kind of methylation-intensive supplementation, making adequate B12 status supportive of overall methyl balance.
Recommendation: Maintain adequate B12 status when running methylation-relevant longevity stacks. No special separation is required; take with food.
Both pterostilbene and berberine activate AMPK and can lower blood glucose. Used together, and especially alongside antidiabetic medication, they may produce additive glucose-lowering effects.
Recommendation: Monitor blood glucose if combining these, particularly in people taking insulin or oral hypoglycemics. Watch for signs of hypoglycemia and adjust under clinical guidance.
Quercetin inhibits several CYP450 enzymes and the efflux transporter P-glycoprotein. Co-administration could alter the metabolism and plasma levels of pterostilbene, which undergoes phase II conjugation, potentially increasing its exposure.
Recommendation: If taking both regularly, consider separating doses and start at modest amounts. Be aware that quercetin may raise pterostilbene levels and the levels of co-administered medications metabolized by the same enzymes.
Both pterostilbene and silymarin from milk thistle are metabolized by hepatic conjugation enzymes (glucuronidation and sulfation), and silymarin can inhibit these pathways. Combined use may alter the clearance of pterostilbene or shared substrates.
Recommendation: Use the combination cautiously, especially in people with liver conditions or on hepatically cleared medications. Keep doses moderate and monitor for unexpected effects.
Numbered references. Citations throughout the page link here.
Randomized controlled trials
2
1Effects of pterostilbene on cardiovascular markers and oxidative stress: a randomized placebo-controlled trialNeeds sourceNo linkRiche DM et al. · Journal of Toxicology · 2014
Pterostilbene 125 mg twice daily reduced systolic and diastolic blood pressure but was associated with a modest increase in LDL cholesterol when taken without grape extract.
3Effect of resveratrol and pterostilbene on aging and longevity-related signaling in mammalian modelsNeeds sourceNo linkLi YR, Lin CC, Li S · BioFactors · 2018
4Pterostilbene and metabolic syndrome: mechanisms and therapeutic potentialNeeds sourceNo linkGomez-Zorita S et al. · Nutrients · 2017
Summarized evidence that pterostilbene activates AMPK and SIRT1, improving glucose handling and lipid metabolism in animal models, though robust human metabolic outcome data remain limited.
5Pterostilbene, a dimethyl ether derivative of resveratrol, and its biological activitiesNeeds sourceNo linkMcCormack D, McFadden D · Oxidative Medicine and Cellular Longevity · 2013
Reviewed preclinical evidence that pterostilbene upregulates endogenous antioxidant defenses via Nrf2 and inhibits NF-kB-mediated inflammation, with greater potency and stability than resveratrol.
7Resveratrol and pterostilbene as inhibitors of human glycosylated proteins and their role in oxidative stressNeeds sourceNo linkEstrela JM, Ortega A, Mena S, Rodriguez ML, Asensi M · Critical Reviews in Clinical Laboratory Sciences · 2013
Mechanistic & preclinical
1
8Pharmacokinetics of resveratrol and its dimethylether analog pterostilbene in ratsNeeds sourceNo linkKapetanovic IM et al. · Cancer Chemotherapy and Pharmacology · 2011
Pterostilbene showed markedly greater oral bioavailability (about 80 percent) and longer plasma exposure than resveratrol in rats, attributed to its slower phase II metabolism.
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