polygonum cuspidatum extract capsules resveratrol

Product Overview

Polygonum Cuspidatum Extract, also known as Japanese Knotweed Extract, is a rich natural source of resveratrol and other polyphenolic compounds. It is widely recognized in the global market as a premium Plant Extract used in Nutritional Ingredients, Anti-aging Ingredients, and Herbal Extracts.

Due to its high concentration of trans-resveratrol, this extract is a preferred raw material for nutraceutical brands targeting antioxidant, longevity, and metabolic health formulations. B2B buyers in the US, EU, and AU markets prioritize high-purity Standardized Extracts, consistent sourcing, and OEM-ready formats.

Content Note: Prepared by our technical team based on current scientific literature. Health claims comply with FDA/EFSA guidelines. Last reviewed: April 2026

According to a study in Journal of Ethnopharmacology (2002), Polygonum cuspidatum extract demonstrated strong antioxidant and anti-inflammatory potential due to its polyphenol content.

According to a study in Food Chemistry (2013), resveratrol derived from Polygonum cuspidatum showed significant free radical scavenging activity.

Key Ingredients & Specifications

Differentiation Content

Resveratrol Content vs Application

Comparison with Other Resveratrol Sources

Recommended Formulation Combinations

• Resveratrol 100–300 mg + NMN for longevity formulas
• Resveratrol 150 mg + Quercetin 250 mg for antioxidant synergy
• Resveratrol 100 mg + Vitamin C for oxidative stress support

Applications & Benefits

Polygonum Cuspidatum Extract is widely used across industries:

• Dietary Supplements: Antioxidant and anti-aging formulations
• Sports Nutrition: Recovery and cellular protection
• Functional Foods: Added to beverages and nutrition blends
• Cosmetics: Used in Skin Repair Ingredients and Anti-aging Ingredients
• Pharmaceutical Research: Active compound for metabolic and longevity studies

Studies suggest this extract may support:

• Reduction of oxidative stress
• Cellular health and longevity pathways
• Cardiovascular and metabolic balance

Why Choose Us – Quality, Certifications & OEM Capability

We supply high-quality Standardized Extracts tailored for global B2B buyers.

• Certifications: ISO, HACCP, GMP, Organic, Kosher, Halal
• OEM Services: Supplement Contract Manufacturing
• Dosage Forms: Capsules, tablets, powders, softgels, gummies
• Customization: Extract ratios, purity levels, formulation blending
• MOQ: Flexible for small to bulk orders
• Lead Time: 2–4 weeks depending on volume

We also offer a wide range of Plant Extracts, Antioxidants , Vitamins, and integrated solutions including Capsule Manufacturing, Softgel Manufacturing, and Powder & Drink Manufacturing.

Frequently Asked Questions

What is the main active compound in Polygonum Cuspidatum Extract?

The primary active compound is trans-resveratrol, typically standardized up to 98%.

What specifications are available?

We offer 10:1 extract, 50%, and 98% resveratrol standardized extracts.

Is this extract suitable for beverages?

Yes, lower concentration or modified forms can be used in beverage formulations.

Do you offer OEM finished products?

Yes, we provide full-service manufacturing including capsules, tablets, and powders.

What documents are provided?

COA, MSDS, TDS, and third-party testing reports are available for each batch.

Shaanxi Kaishi Biotechnology Co. LTD,., was established in june 2022. It is a professional animal and plant extracts modern and advanced enterprise object, pharmaceutical intermediates, and natural active ingredients. In the development, production and marketing, is very powerful. Headquartered in Henan. It has a research and development center and the Analysis and Testing Center, with strong comprehensive national strength. The company has 200 acres of experimental field of plant cultivation, extraction, distillation, rectification, chromatography, three specialized production lines, as well as 10,000 square meters of GMP standard workshop..