This profile is for informational purposes only and is not medical advice. Consult a healthcare professional before use. See full terms.
Pterostilbene
Pterostilbene is a naturally occurring polyphenol closely related to resveratrol but with significantly better bioavailability. Found primarily in blueberries, it is a potent antioxidant and anti-inflammatory compound that supports brain health, memory, and cognitive longevity through multiple neuroprotective mechanisms.
Benefits
What is Pterostilbene?
Pterostilbene (trans-3,5-dimethoxy-4-hydroxystilbene) is a stilbenoid polyphenol and a dimethylated analogue of resveratrol. While resveratrol has received far more media attention, pterostilbene is increasingly recognised as the superior compound for supplementation due to its dramatically better pharmacokinetic profile - approximately 80% oral bioavailability compared to roughly 20% for resveratrol.
This improved bioavailability stems from pterostilbene's two methoxy groups (compared to resveratrol's hydroxyl groups), which make it more lipophilic and resistant to metabolic breakdown. The result is higher blood levels, longer half-life (roughly 105 minutes vs 14 minutes for resveratrol), and greater penetration into target tissues including the brain.
Research in animal models has consistently shown pterostilbene's ability to improve cognitive function, particularly in ageing subjects. It appears to work through multiple complementary mechanisms: reducing oxidative stress, modulating inflammation, activating longevity-related sirtuins, and supporting healthy gene expression patterns associated with youthful brain function. Human clinical trials, while still limited, have shown promising results for memory improvement and cardiovascular markers.
- Antioxidant protection: Pterostilbene neutralises reactive oxygen species and upregulates endogenous antioxidant enzymes (SOD, catalase, glutathione peroxidase), protecting neurons from oxidative damage associated with ageing.
- Sirtuin activation: Like resveratrol, pterostilbene activates SIRT1 and other sirtuins - longevity-associated proteins involved in DNA repair, mitochondrial function, and healthy ageing.
- Anti-inflammatory action: Inhibits NF-kB signalling and reduces production of pro-inflammatory cytokines (TNF-alpha, IL-6), countering chronic neuroinflammation that accelerates cognitive decline.
- Dopamine receptor support: Animal studies show pterostilbene can restore dopamine release and receptor sensitivity in ageing brains, supporting motivation, reward processing, and working memory.
- Neuroplasticity enhancement: May increase Brain-Derived Neurotrophic Factor (BDNF) and support hippocampal neurogenesis, promoting the brain's ability to form new connections and adapt.
- Typical dose: 50-150 mg per day
- Clinical research dose: 100-250 mg per day in human trials
- For cognitive support: 50-100 mg taken 1-2 times daily
- With resveratrol: Some formulations combine pterostilbene (50 mg) with trans-resveratrol (250-500 mg) for synergistic effects
- Timing: Can be taken with or without food, though fat-containing meals may improve absorption of this lipophilic compound
Pterostilbene is well absorbed orally and has a relatively long half-life for a polyphenol. Consistent daily supplementation is recommended for cumulative neuroprotective benefits.
- Side effects: Generally very well tolerated at recommended doses. Some reports of mild gastrointestinal discomfort.
- Cholesterol effects: One clinical trial noted a slight increase in LDL cholesterol at higher doses (250 mg/day) in some subjects. Monitor lipid panels if supplementing long-term at higher doses.
- Blood sugar: May lower blood sugar levels. Those on diabetes medications should monitor glucose levels and consult a doctor.
- Drug interactions: Potential interaction with blood thinners, diabetes medications, and drugs metabolised by cytochrome P450 enzymes. Consult a healthcare provider if taking medications.
- Pregnancy: Insufficient safety data. Avoid supplemental doses during pregnancy and breastfeeding.
Pterostilbene has a strong safety profile based on available research, with most studies reporting no significant adverse effects at standard doses.
Natural Sources & Forms
- Blueberries: The richest common dietary source, though concentrations are too low for therapeutic effect from diet alone (roughly 0.03 mg per cup)
- Grapes: Present in small amounts in grape skins and red wine
- Almonds: Contain trace amounts of pterostilbene
- Heartwood of Indian Kino tree: (Pterocarpus marsupium) - the botanical source that gives pterostilbene its name
- Supplements: Available as capsules, typically derived from synthetic production or concentrated plant extracts. pTeroPure is a commonly used branded ingredient in supplements.
Frequently Asked Questions
Pterostilbene is a naturally occurring polyphenol closely related to resveratrol but with significantly better bioavailability. Found primarily in blueberries, it is a potent antioxidant and anti-inflammatory compound that supports brain health, memory, and cognitive longevity through multiple neuroprotective mechanisms.
The key benefits of Pterostilbene include: Cognitive Enhancement, Energy, Focus, Longevity, Memory, Mood.
Antioxidant protection: Pterostilbene neutralises reactive oxygen species and upregulates endogenous antioxidant enzymes (SOD, catalase, glutathione peroxidase), protecting neurons from oxidative damage associated with ageing. Sirtuin activation: Like resveratrol, pterostilbene activates SIRT1 and other sirtuins - longevity-associated proteins involved in DNA repair, mitochondrial function, and healthy ageing. Anti-inflammatory action: Inhibits NF-kB signalling and reduces production of pro-inflammatory cytokines (TNF-alpha, IL-6), countering chronic neuroinflammation that accelerates cognitive decline. Dopamine receptor support: Animal studies show pterostilbene can restore dopamine release and receptor sensitivity in ageing brains, supporting motivation, reward processing, and working memory. Neuroplasticity enhancement: May increase Brain-Derived Neurotrophic Factor (BDNF) and support hippocampal neurogenesis, promoting the brain's ability to form new connections and adapt.
Typical dose: 50-150 mg per day Clinical research dose: 100-250 mg per day in human trials For cognitive support: 50-100 mg taken 1-2 times daily With resveratrol: Some formulations combine pterostilbene (50 mg) with trans-resveratrol (250-500 mg) for synergistic effects Timing: Can be taken with or without food, though fat-containing meals may improve absorption of this lipophilic compound Pterostilbene is well absorbed orally and has a relatively long half-life for a polyphenol. Consistent daily supplementation is recommended for cumulative neuroprotective benefits.
Side effects: Generally very well tolerated at recommended doses. Some reports of mild gastrointestinal discomfort. Cholesterol effects: One clinical trial noted a slight increase in LDL cholesterol at higher doses (250 mg/day) in some subjects. Monitor lipid panels if supplementing long-term at higher doses. Blood sugar: May lower blood sugar levels. Those on diabetes medications should monitor glucose levels and consult a doctor. Drug interactions: Potential interaction with blood thinners, diabetes medications, and drugs metabolised by cytochrome P450 enzymes. Consult a healthcare provider if taking medications. Pregnancy: Insufficient safety data. Avoid supplemental doses during pregnancy and breastfeeding. Pterostilbene has a strong safety profile based on available research, with most studies reporting no significant adverse effects at standard doses.
Overall Rating
Log in to rate this nootropic.
Comments
Log in to leave a comment.
No comments yet. Be the first to share your experience!