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Quercetin Anhydrous
Product Introduction
Quercetin Anhydrous is a high-purity natural flavonoid compound extracted from *Sophora japonica* L. (Japanese Pagoda Tree flower buds). Produced through a high-temperature dehydration process (95–97°C) to remove crystalline water, it boasts an active ingredient content approximately 10.7% higher than that of Quercetin Dihydrate. Furthermore, it exhibits superior powder flowability and enhanced stability, making it ideally suited for use in pharmaceutical raw materials, high-end formulations, and complex compound preparations.
Kehong offers the following products:
Quercetin Dihydrate(Yellow needle-like crystals /powder)
Anhydrous Quercetin(Yellow powder)
Dihydroquercetin(white powder)
Liposomal Quercetin
Our products are free from pesticide residues and heavy metal contamination. We provide a Certificate of Analysis (COA), Heavy Metal Testing Reports, and Microbiological Reports.
Product Benefits
Beyond powerful antioxidant and anti-inflammatory properties, anhydrous quercetin delivers a wide range of sub-health support benefits widely reported by long-term supplement users .
1.Relieves chronic sinus issues and post-nasal drip
As a natural mast cell stabilizer, it reduces persistent mucosal inflammation and nasal congestion. Many users with year-round allergies and chronic sinusitis report fewer flare-ups, reduced morning phlegm and milder post-nasal drip after continuous use.
2.Accelerates soft tissue recovery and eases exercise-related soreness
Fitness enthusiasts and office workers confirm it effectively alleviates chronic fascial strain, tennis elbow, tendinitis and delayed onset muscle soreness. It lowers whole-body low-grade inflammation, speeds up soft tissue repair and reduces recurring joint and muscle discomfort.
3.Repairs intestinal barrier and improves gut sensitivity
Anhydrous quercetin helps strengthen intestinal wall integrity, relieves leaky gut symptoms, mild gastritis and IBS discomforts. It reduces bloating, acid reflux and mild food intolerance caused by chronic intestinal inflammation, supporting long-term digestive health.
4.Alleviates brain fog, nerve fatigue and mild anxious mood
Chronic inflammation is a major trigger for brain fog and poor focus. Regular intake helps reduce neuroinflammation, enhance mental clarity, relieve long-term stress, nervous exhaustion and light sleep problems without causing drowsiness or side effects.
5.Improves inflammatory skin conditions
Users with sensitive skin, rosacea, recurring inflammatory acne and seborrheic dermatitis notice obvious improvements. It reduces subcutaneous redness, flushing and persistent itching by inhibiting skin oxidative damage and chronic inflammatory responses.
6.Supports thyroid and autoimmune balance
For people with low-grade autoimmune inflammation and Hashimoto’s tendency, quercetin regulates overactive immune responses, relieves body fatigue and chronic inflammatory stress, and assists in maintaining stable thyroid health.
7.Promotes oral health and reduces periodontal inflammation
It inhibits local oral inflammatory reactions, relieves bleeding gums, swollen periodontal tissues and recurrent oral ulcers. It is a gentle, natural ingredient for daily oral inflammatory care formulas.
8.Assists uric acid metabolism and mild gout relief
Community feedback shows that quercetin helps modulate purine metabolism, promote uric acid excretion, and ease mild joint discomfort caused by high uric acid and micro-inflammatory reactions.
product application
1.Autoimmune & Daily Wellness Supplement Formulas
Anhydrous quercetin is widely added into daily immune balance and autoimmune support blends. It modulates overactive immune response, reduces systemic low-grade inflammation, and serves as a core raw material for Hashimoto support, autoimmune care and chronic sub-health maintenance supplements.
2.Sinus & Respiratory Daily Care Products
Widely used in natural sinus relief capsules, seasonal allergy support complexes, dry throat soothing formulas and upper respiratory tract care supplements. Its mast cell stabilizing effect helps users resist pollen, dust and environmental irritants all year round.
3.Sports Nutrition & Post-Workout Recovery Supplements
Popular in sports nutrition lines for post-exercise repair, muscle inflammation relief and endurance support. Fitness brands incorporate anhydrous quercetin into post-workout blends, joint protection supplements and anti-fatigue sports nutrients to reduce exercise-induced oxidative stress.
4.Gut Health & Digestive Support Supplements
Applied in leaky gut repair formulas, intestinal barrier strengtheners, IBS soothing complexes and mild gastritis care products. As a natural intestinal anti-inflammatory ingredient, it helps brands develop gentle, long-term digestive health daily supplements.
5.Nootropic & Mental Clarity Formulations
Used in brain fog relief, cognitive support and stress relief nootropic products. By reducing neuroinflammation, anhydrous quercetin fits clean-label mood support, anti-anxiety and daily mental energy supplement development.
6.Professional Dermal & Dermatological Raw Materials
Beyond ordinary skincare, it is applied in medical-grade soothing preparations, rosacea care topicals, anti-redness serums, scalp anti-inflammation products and seborrheic dermatitis maintenance cosmetics for sensitive skin lines.
7.Oral Care Functional Raw Materials
Added into natural toothpaste, anti-inflammatory mouthwash, oral lozenges and periodontal care solid drinks. It targets gum bleeding, oral mucosal inflammation and recurrent ulcers, meeting the demand for clean-label natural oral care.
8.Metabolic & Uric Acid Management Products
An ideal ingredient for high uric acid support blends, purine metabolism regulators and mild gout daily care supplements. It assists uric acid excretion and relieves metabolic joint inflammation for sub-health metabolic crowds.
9.Veterinary & Pet Health Supplements
Fast-growing B2B application: pet allergy chews, dog & cat skin inflammation supplements, pet joint care tablets and animal immune enhancers. Natural plant-based quercetin is safe and compliant for pet nutrition formula upgrading.
10.Pharmaceutical Intermediate & Prescription Adjuvant Raw Materials
High-purity 98% / 99% anhydrous quercetin is used as pharmaceutical raw materials for anti-inflammatory, cardiovascular adjuvant drugs and respiratory compound preparations, meeting USP/EP pharmacopoeia standards.
11.Functional Beverages & Clean Label Fortified Foods
Suitable for low-sugar antioxidant functional drinks, plant-based nutrition powders, meal replacements, energy bars and baked functional foods. With high stability than quercetin dihydrate, it adapts to high-temperature food processing.
12.Anti-Aging Longevity Complex Formulas
Matched with resveratrol, NMN, CoQ10 and polyphenol ingredients to develop longevity and anti-aging compound supplements. Activating Nrf2 pathway makes it a core ingredient in advanced healthy aging product lines.
Why choose us？
Our Certifications:Our products meet the standards of USP/EP Pharmacopoeia well as ISO9001, ISO22000, GMP, Kosher and Halal certifications. For every batch of our products we give you a Certificate of Analysis heavy metal reports, microbiological reports and HPLC chromatograms. Our products like our extracts are certified to be of high quality.
Clinical Research Support:A study published in the Journal of the American Heart Association in 2016 found that taking 500 mg of quercetin every day can lower blood pressure. This study is about quercetin, which's a key ingredient in our products.
Manufacturing Capabilities:We have been focused on plant extracts for 15 years, and we can make more than 5 tons of our products every month. We grow our Sophora japonica and we control the quality of our products from start to finish.
Free Samples:We offer samples of our products ranging from 10g to 50g. You can try our products like our botanical extracts for free.
Custom Services:We offer granulation, particle size adjustment, and custom packaging for our products. We also take orders starting at 1 kg. Our products, including our extracts can be customized to meet your needs.
Quality Guarantee:We guarantee the quality of our products. If there are any problems with our products like our extracts we will help you return or exchange them.
Fast Shipping:We have a lot of our products in stock than 10 tons so we can ship your order within 3 to 7 days. Our products, including our extracts will be shipped to you quickly.
Technical Help:Our team of experts helps with formula design, process optimization and application solutions for our products. We can help you with any problems you have with our products like our extracts.
US Warehouse:We have a warehouse in the US with our products in stock all year round. This means we can ship our products to you quickly. Our products, including our extracts are available in the US for fast shipping.
fAQ
Q: What is the core difference between anhydrous quercetin and quercetin dihydrate?
A: Anhydrous quercetin contains no crystalline water, boasts a 10.7% higher active ingredient content, offers superior stability, and is less prone to moisture absorption; it is ideal for high-temperature processing, long-term storage, and high-end pharmaceutical formulations. Quercetin dihydrate contains 10.7% crystalline water; while its water solubility is slightly better and its price is lower, it is primarily suited for standard dietary supplements.
Q: Given the poor water solubility of anhydrous quercetin, how can its absorption be enhanced?
A: We recommend combining it with Vitamin C or Bromelain (which can boost absorption rates by 3–5 times), or utilizing technologies such as nano-encapsulation, solid dispersion, or cyclodextrin inclusion to improve both water solubility and bioavailability.
Q: Does the product comply with international export standards?
A: It fully complies with USP, EP, and FDA GRAS standards, and holds ISO9001, ISO22000, Kosher, and Halal certifications. Its heavy metal and microbiological indicators fall well below international limits, and a complete set of export documentation is provided.
Q: What is the Minimum Order Quantity (MOQ)? What is the lead time?
A: Free samples of 10g are available; for bulk orders, the standard packaging unit is 25kg per drum. We maintain a ready stock, allowing for shipment within 3–7 days.
Q: What is the product's shelf life? How should it be stored?
A: The shelf life is 24 months (when kept unopened); it should be stored in a cool, dry place, protected from light, and kept tightly sealed.
Q:How do you handle damaged goods during logistics?
A:We have professional warehouse packing services. The packaging is very sturdy, with double-layered thickened PE bags inside the cardboard drums. Under normal circumstances, damage will not occur. If such a situation does happen, don't worry, we will resend products of the same quality as soon as possible.
KH Health is your trusted partner, dedicated to listening to customers, solving every problem, and providing quick responses. For any questions or assistance regarding quercetin anhydrous powder, feel free to contact us via:
Email: sales@kh-health.com
WeChat: +86 13096987266
WhatsApp: +86 18792880979
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