Pterostilbene
Trans-3,5-dimethoxy-4-hydroxystilbene
TL;DR
Pterostilbene is a methylated relative of resveratrol with far better oral bioavailability. Early human trials suggest effects on blood lipids, blood pressure and oxidative stress, with cognition still speculative.
Ideal For
- Adults working on lipid and blood-sugar control alongside diet and exercise
- People who tried resveratrol and want a better-absorbed alternative
- Those seeking added antioxidant support in an ageing-focused routine
Avoid If
- Pregnant or breastfeeding
- Living with uncontrolled hypertension
- Taking statins without discussing the combination with a clinician
Frequently Asked Questions
Overview
Pterostilbene is a stilbene polyphenol found mainly in blueberries and Indian kino tree heartwood. Structurally it is resveratrol with two methoxy groups in place of hydroxyls — a small change that dramatically slows liver metabolism. Where resveratrol is largely conjugated and cleared before it can act, pterostilbene reaches substantially higher and longer-lasting blood levels from the same dose, which is the main reason it has displaced resveratrol in many formulations.
The strongest human data comes from a randomised, placebo-controlled trial in adults with elevated cholesterol, where 125 mg twice daily lowered LDL cholesterol and raised blood pressure slightly in the non-statin group — a mixed result that argues for monitoring rather than enthusiasm. Other small trials have reported reductions in oxidative stress markers. Cognitive and longevity claims rest on rodent and cell work involving SIRT1 activation and Nrf2-mediated antioxidant signalling; they have not been demonstrated in people.
Pterostilbene is best understood as a promising metabolic and antioxidant compound with a thin but real human evidence base. It is a reasonable adjunct for someone already managing lipids and blood sugar through diet and exercise, and a poor substitute for either.
How It Works
- Activates SIRT1 and AMPK pathways implicated in metabolic and mitochondrial regulation
- Induces Nrf2-driven antioxidant enzymes including glutathione peroxidase and superoxide dismutase
- Two methoxy groups reduce first-pass glucuronidation, giving roughly four-fold higher oral bioavailability than resveratrol
- Modulates PPAR-alpha signalling, the proposed route for its effect on circulating lipids
Quick Facts
- Better absorption than resveratrol
- Supports brain health
- Cardiovascular protection
- Blood sugar regulation
- Anti-inflammatory effects
Benefits & Outcomes
Sirtuin Activation
Pterostilbene is better absorbed than resveratrol but inherits the same unproven premise.
Blood Sugar Balance
Glucose-lowering effects seen in animals have not been reproduced in human trials.
Cognitive Function
Cognitive benefits remain hypothetical in humans.
Heart Health Support
One human trial found lipid and blood pressure changes, though LDL rose at higher doses.
Anti-Aging Effects
Pterostilbene is promoted as a more bioavailable resveratrol analogue, but no human trial has measured aging outcomes.
Antioxidant Protection
Pterostilbene raises antioxidant capacity in preclinical work, with only indirect human confirmation.
Health Concerns Addressed
No linked health concerns yet.
Supporting Research6 studies
Pterostilbene: A review of its antioxidant activity, neuroprotective properties and potential role in cancer therapy
McCormack D, McFadden D
Pterostilbene has substantially higher oral bioavailability and a longer half-life than resveratrol because its two methoxy groups resist rapid glucuronidation. Preclinical work shows antioxidant, anti-inflammatory, lipid-lowering and anticancer activity across multiple models. Human evidence at the time of review was limited to small early-phase studies.
Pterostilbene Improves Cognitive Performance in Aged Rats: An In Vivo Study
Joseph JA, Fisher DR, Cheng V +2 more
Pterostilbene-fed aged rats performed better on working memory tasks than controls, and improvement correlated with hippocampal pterostilbene levels and enhanced dopamine release. Effects were dose-dependent and specific to pterostilbene rather than total anthocyanin intake.
Pterostilbene on Metabolic Parameters: A Randomized, Double-Blind, and Placebo-Controlled Trial
Riche DM, McEwen CL, Riche KD +4 more
Pterostilbene 125 mg twice daily reduced systolic and diastolic blood pressure, but LDL cholesterol rose in the high-dose monotherapy group.
Analysis of Safety from a Human Clinical Trial with Pterostilbene
Riche DM, McEwen CL, Riche KD +4 more
Pterostilbene up to 250 mg/day for six to eight weeks was generally well tolerated with no significant differences in adverse events versus placebo.
A review of pterostilbene antioxidant activity and disease modification
McCormack D, McFadden D
Preclinical work shows antioxidant, anti-inflammatory and metabolic effects of pterostilbene, with greater bioavailability than resveratrol.
Pharmacokinetics, oral bioavailability, and metabolic profile of resveratrol and its dimethylether analog, pterostilbene, in rats
Kapetanovic IM, Muzzio M, Huang Z +2 more
Pterostilbene showed roughly 80 percent oral bioavailability versus about 20 percent for resveratrol in rats.
Safety Information
Potential Side Effects
Well tolerated at 50-100 mg. At 250 mg daily, small increases in blood pressure and occasional mild gastrointestinal upset have been reported.
Contraindications
Caution with uncontrolled high blood pressure — one trial found a small blood-pressure increase at 250 mg daily. No data in pregnancy, lactation or children.
Drug Interactions
- Statins — the lipid trial found different effects in statin users; discuss before combining
- Antihypertensives — pterostilbene may blunt or oppose blood-pressure control at higher doses
- CYP450-metabolised drugs — theoretical interaction based on in-vitro enzyme inhibition
Pregnancy & Breastfeeding
Pregnancy: insufficient_data
Breastfeeding: insufficient_data
Dosage Guidelines
Dosage Used in Studies
50-200 mg
Best Time to Take
With breakfast or the largest meal of the day
Best Form
Standalone pterostilbene, 50-100 mg
Bioavailability
Dimethylated analog of resveratrol. Superior bioavailability to resveratrol (80% vs 20%). Longer half-life. Lipophilic - better absorbed with fat. May support cognitive and metabolic health.
Forms Compared
Standalone pterostilbene
Pterostilbene + nicotinamide riboside
Blueberry extract
Food & Timing
Take with a fat-containing meal — pterostilbene is lipophilic and absorption improves markedly with food.
Medical Disclaimer
The information provided on this website is for educational and informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or before starting any supplement regimen.
Individual results may vary. The statements on this website have not been evaluated by the Food and Drug Administration. Products and information are not intended to diagnose, treat, cure, or prevent any disease.