Pterostilbene Po

What is Pterostilbene?

Pterostilbene (CAS 537-42-8) is a naturally occurring stilbene polyphenol found primarily in blueberries, grapes, and the heartwood of Pterocarpus marsupium. It belongs to the same stilbene family as resveratrol but offers a distinct structural advantage: pterostilbene is a dimethylated analog of resveratrol, with two methoxy (–OCH₃) groups replacing two hydroxyl (–OH) groups on the stilbene backbone.

This seemingly small structural difference has profound pharmacokinetic consequences. The additional methoxy groups significantly increase pterostilbene’s lipophilicity, allowing it to cross cell membranes far more efficiently. As a result, pterostilbene achieves an oral bioavailability of approximately 80%, compared to only ~20% for resveratrol. This superior absorption and metabolic stability make pterostilbene a highly attractive active ingredient for dietary supplements, nutraceuticals, and functional formulations.

Key Benefits & Functions

Pterostilbene is backed by a growing body of preclinical and clinical research demonstrating a broad spectrum of health-promoting activities.

Powerful Antioxidant

Pterostilbene is a potent free radical scavenger that neutralizes reactive oxygen species (ROS) and reduces oxidative stress at the cellular level. It also activates the Nrf2 (nuclear factor erythroid 2-related factor 2) pathway, upregulating the body’s own endogenous antioxidant defense enzymes, including superoxide dismutase (SOD) and glutathione peroxidase.

Anti-Inflammatory

Pterostilbene inhibits key pro-inflammatory signaling pathways, including NF-κB (nuclear factor kappa-light-chain-enhancer of activated B cells) and COX-2 (cyclooxygenase-2). By suppressing these pathways, it helps reduce chronic low-grade inflammation associated with metabolic disease, cardiovascular conditions, and neurodegeneration.

Cardiovascular Support

Research indicates pterostilbene can lower LDL cholesterol levels, reduce blood pressure, and exert anti-atherosclerotic effects by inhibiting lipid peroxidation and improving endothelial function. These combined actions support overall cardiovascular health and reduce risk factors associated with heart disease.

Neuroprotective Effects

Thanks to its high lipophilicity, pterostilbene readily crosses the blood-brain barrier — a critical advantage over many polyphenols. Studies suggest it improves memory and cognitive function, reduces neuroinflammation, and may offer protective effects against age-related neurodegenerative conditions.

Blood Sugar Management

Pterostilbene has demonstrated the ability to improve insulin sensitivity and lower fasting blood glucose levels in preclinical models. These effects make it a promising ingredient for metabolic health formulations targeting blood sugar regulation.

Anti-Aging

Pterostilbene activates sirtuins — a family of NAD⁺-dependent deacetylases linked to longevity and cellular stress resistance — and has been shown to extend cellular lifespan in various model systems. This sirtuin-activating activity is shared with resveratrol but is enhanced by pterostilbene’s superior bioavailability.

Potential Anti-Cancer Properties

Emerging research suggests pterostilbene may inhibit tumor cell proliferation, induce apoptosis, and suppress angiogenesis in various cancer cell lines. While these findings are largely preclinical, they highlight pterostilbene’s potential as a chemopreventive agent.

Specifications & Quality

Our pterostilbene is manufactured to the highest quality standards to meet the demands of professional supplement and nutraceutical manufacturers.

• Purity: ≥99% by HPLC
• Appearance: White to off-white fine powder
• Grade: Food Grade
• Available Specifications: 99%
• Manufacturing Standard: cGMP (Good Manufacturing Practice) certified facility
• Testing: Each batch is tested for identity, purity, heavy metals, and microbial contamination, with a full Certificate of Analysis (COA) available upon request.

Applications

Pterostilbene’s exceptional bioavailability and broad bioactivity profile make it suitable for a wide range of product categories:

• Dietary Supplements: Capsules, tablets, softgels, and powdered supplement blends
• Nutraceuticals: Longevity, cognitive health, and metabolic wellness formulations
• Functional Foods & Beverages: Fortified foods, health drinks, and wellness shots
• Cosmetic Formulations: Anti-aging skincare products leveraging its antioxidant and anti-inflammatory properties
• Pharmaceutical Research: Preclinical and clinical research into cardiovascular, neurological, and metabolic applications

Recommended Dosage

The typical effective dosage of pterostilbene ranges from 50 to 250 mg per day, depending on the intended application and individual health goals. Clinical studies have used doses of up to 250 mg/day and have generally reported a favorable safety profile at these levels.

For best results, pterostilbene should be taken with meals to enhance absorption, as the presence of dietary fat can further improve its uptake due to its lipophilic nature. New users are advised to begin at the lower end of the dosage range (50–100 mg/day) and gradually increase as tolerated.

Side Effects & Safety Considerations

Pterostilbene is generally well-tolerated and considered safe at doses up to 250 mg/day based on available clinical data. However, as with any bioactive compound, certain considerations should be kept in mind:

• Gastrointestinal Effects: Some users may experience stomach discomfort, nausea, or diarrhea, particularly at higher doses. Starting at 50–100 mg/day and gradually increasing the dose is recommended to minimize GI side effects.
• Blood Pressure: At higher doses (250 mg/day), pterostilbene may increase blood pressure in some individuals, particularly those with elevated cholesterol. People with hypertension or those taking blood pressure medications should consult a healthcare provider before use.
• LDL Cholesterol: Some studies have noted a potential increase in LDL cholesterol at higher doses. Regular lipid panel monitoring is advised for long-term users.
• Liver Health: Pterostilbene may influence liver enzyme levels. Individuals with pre-existing liver conditions should exercise caution, and periodic liver function tests are recommended for long-term supplementation.
• Drug Interactions: Pterostilbene may interact with blood pressure medications, blood thinners (anticoagulants), and medications metabolized by the CYP450 enzyme system. Consult a physician before combining with prescription medications.
• Special Populations: Pregnant or breastfeeding women should avoid use due to insufficient safety data. People with diabetes should monitor blood sugar levels carefully, as pterostilbene may have additive glucose-lowering effects.
• Headaches: Headaches have been reported in some users, particularly at higher doses.
• Regulatory Note: The U.S. Food and Drug Administration (FDA) has not evaluated pterostilbene as a drug. It is sold as a dietary supplement and is not intended to diagnose, treat, cure, or prevent any disease.

Why Choose Our Pterostilbene?

We are a trusted B2B supplier of high-purity pterostilbene for manufacturers, formulators, and research institutions worldwide. Here is why our customers choose us:

• ≥99% Purity: Verified by HPLC with full batch documentation
• GMP-Certified Manufacturing: Produced in a cGMP-compliant facility ensuring consistent quality and safety
• Competitive Wholesale Pricing: Transparent, volume-based pricing for bulk orders
• Low MOQ: Minimum order quantity of just 1 g, ideal for product development and scale-up
• Fast Lead Time: Standard 3-day lead time for in-stock inventory
• Full Documentation: COA (Certificate of Analysis) and TDS (Technical Data Sheet) available on request
• Reliable Supply Chain: Consistent inventory and dependable logistics for uninterrupted production schedules