Longevity Dietary supplement

Pterostilbene

Pteroresveratrol

Evidence: Studied in humans. Example dose: finalize with a provider. Not a fact-check stamp.

50-100 mg – 100mg Oral Daily

Pterostilbene (trans-3,5-dimethoxy-4'-hydroxystilbene) is a methylated analog of resveratrol found primarily in blueberries, grapes, and the Indian Kino tree (Pterocarpus marsupium - hence the name 'pterostilbene'). The two methoxy groups (-OCH3) replacing two of resveratrol's hydroxyl groups give pterostilbene dramatically improved oral bioavailability (~80% vs resveratrol's ~1%) and a much longer plasma half-life (~105 minutes vs resveratrol's ~14 minutes free form). Both compounds activate similar pathways (SIRT1, AMPK, autophagy) but pterostilbene's superior pharmacokinetics make it the more pharmacologically active stilbene at typical supplement doses.

Quick Start

Route

Oral

Start low

100mg Oral

Frequency

Daily

Timing

Anytime

Take with food (preferably containing some fat). Pairs naturally with NR/NMN as the substrate-activator combination. 50-250mg range covers most clinical use cases. Higher pharmacokinetic stability than resveratrol means once-daily dosing is sufficient for most purposes.

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Start here. Every protocol below is ordered lowest-first. Begin at the smallest effective dose, hold about a week to assess tolerance, and step up only if needed.

Tiered Protocols · lowest first

Standard

Sirtuin Activation

50-100 mg · Oral · Daily

human clinical trial · Riche et al. 2014 (Evid Based Complement Alternat Med)

A dimethylated analog of Resveratrol with vastly superior oral bioavailability and a longer half-life.

50-100 mg

Daily

Conservative start

100mg · Oral · Daily

conservative starter

100mg

Daily

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How it works

Pterostilbene shares resveratrol's primary mechanisms - SIRT1 activation (debated), AMPK activation (robust), and autophagy induction - but with substantially better in vivo activity due to superior pharmacokinetics. The two methoxy groups protect pterostilbene from the rapid sulfation/glucuronidation that limits resveratrol, resulting in 80% oral bioavailability vs 1% for resveratrol and tissue concentrations 100-300x higher per equivalent dose.

AMPK activation is dose-dependent and reproducible at physiologically achievable concentrations (low micromolar). Downstream effects include PGC-1alpha activation (mitochondrial biogenesis), mTOR inhibition (autophagy induction), reduced lipogenesis (lower hepatic triglyceride and LDL synthesis), and improved fatty acid oxidation. The metabolic shift mimics caloric restriction and exercise adaptations - similar to other AMPK activators (metformin, berberine, exercise itself).

Pterostilbene also has direct antioxidant activity (free radical scavenging via the polyphenol structure - more potent than resveratrol per mole), modulates Nrf2 pathway (cellular antioxidant defenses), inhibits NF-kB (anti-inflammatory), and has neuroprotective effects via reduced neuroinflammation and improved blood-brain barrier integrity. The methylation pattern reduces estrogen receptor binding compared to resveratrol, decreasing phytoestrogen activity - relevant for hormone-sensitive populations who may want pterostilbene's pathway benefits without the estrogenic profile.

What to expect

Early

Days 1–7

Days 1-14: Subclinical AMPK activation. Some report subtle clarity.

Evidence

HumanPresent

AnimalPresent

In-vitroStrong

Each reference below was re-fetched from its PubMed record, and the quoted sentence was confirmed to appear in that abstract and to support the claim it sits under. Follow any of them to read the source.

PTE pretreatment effectively reduced the lipid accumulation in OA and PA induced HepG2 cells and tyloxapol induced mice, and significantly promoted the expression of nNrf2, PPAR-α and HO-1, and AMPK activity, but inhibited the expression of mTORC 1 and SREBP-1c.

PTE pretreatment effectively reduced the lipid accumulation in OA and PA induced HepG2 cells and tyloxapol induced mice, and significantly promoted the expression of nNrf2, PPAR-α and HO-1, and AMPK activity, but inhibited the expression of mTORC 1 and SREBP-1c.

Pterostilbene alleviated NAFLD via AMPK/mTOR signaling pathways and autophagy by promoting Nrf2. Phytomedicine : international journal of phytotherapy and phytopharmacology · 2023 · PMID 36610156

Evidence scope. Animal NAFLD model; no support for 100 mg oral human use.

Claims we could not support

No abstract we checked supports these for this molecule at this route. That is not the same as saying they are false — it marks where the evidence is missing.

Dose/route: 100mg via Oral, Daily. No checked live PubMed abstract supported this complete molecule/formulation/route/dose/frequency combination.

Primary safety claim: Generally well tolerated at standard doses (50-250mg/day). No checked live abstract directly established this as the primary concern for the card's exact formulation and regimen.

Interactions & stacking

Two different questions: what is documented about running these together, and what is documented about drawing them into the same syringe. A good pharmacological partner can still have to be pinned separately.

Documented together

CurcuminBoth polyphenol anti-inflammatories with different molecular targets. Compatible no expected conflicts.

Omega-3 Fatty AcidsPterostilbene is fat-soluble; co-administration with omega-3 improves absorption. Anti-inflammatory complement.

BerberineBoth AMPK activators. Compatible but somewhat redundant - berberine is more potent for glucose control specifically.

Nicotinamide Riboside (NR)Pterostilbene activates SIRT1; SIRT1 requires NAD+. NR provides substrate, pterostilbene activates enzyme. The Basis (Elysium) formulation pairs them for this reason.

Keep separate

Anticoagulants (warfarin, apixaban, rivaroxaban)Like resveratrol, pterostilbene has antiplatelet activity. Bleeding risk increase when combined with anticoagulants. Discuss with prescribing physician.

CYP1A2 / CYP3A4 substrates (some medications)Pterostilbene may modestly inhibit certain CYP enzymes. Less clinically significant than resveratrol but worth pharmacist review for patients on multiple medications.

Surgery (within 2 weeks)Antiplatelet activity can increase intraoperative bleeding risk. Discontinue 2 weeks before scheduled surgery.

Check any specific pair in the Stack & Interaction Checker, which answers both questions separately. Absence of a documented conflict is not evidence of safety.

Pharmacokinetics

Illustrative plasma concentration · 9 h

Half-life

~105 minutes

(parent compound) - ~7x longer than resveratrol

Peak · Tmax

~1-2 hours

Oral

Elimination

~12-24 hours

Bioavailability

~80%

Oral - dramatically better than resveratrol due to methoxy groups protecting from sulfation/glucuronidation. Most-bioavailable common stilbene.

Duration of action

Effects sustained with daily dosing. Long half-life means once-daily dosing maintains effective tissue concentrations.

Clearance

Hepatic metabolism via demethylation, hydroxylation, and conjugation (sulfation/glucuronidation, but slower than resveratrol). Renal and biliary excretion of metabolites.

Storage. Store at room temperature (20-25C) in a cool, dry, dark place. Pterostilbene is more stable than resveratrol due to the methoxy groups but still light-sensitive. Capsules shelf-stable for 24+ months. Keep in opaque containers.

Regulatory status

Classified as a dietary supplement in the US (no FDA pre-approval required). Available widely over the counter. EU permits pterostilbene as a food supplement. ChromaDex's pTeroPure (the most-studied commercial form) has GRAS self-affirmation. Major branded products include Basis (Elysium) which combines pterostilbene with NR.

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The guide & community

The complete Pterostilbene walkthrough, real protocol discussion and coaching live inside the BlessUp community on Skool.

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