Quercetin Powder

Short Description:

Quercetin is commonly used as a expectorant drug in clinical medicine in China. This product has various kinds of pharmacological functions such as having a good expectorant, cough effect, also having certain anti-asthma effect, and having further effects of lowering blood pressure, enhancing capillary resistance, reducing capillary fragility, reducing blood fat, expansion of coronary artery, increasing coronary blood flow.Clinically, quercetin is mainly used for treating clinical bronchitis and phlegmatic inflammation. It also has adjuvant therapy effect on coronary artery disease and high blood pressure. FDA may have some kinds of adverse reactions such as dry mouth, dizziness, and burning sensation in stomach area which may disappear after treatment.Quercetin is widely distributed in angiosperms such as Threevein Astere, Golden Saxifrage, berchemia lineata, gold, rhododendron dauricum, seguin loquat, purple rhododendron, Rhododendron micranthum, Japanese Ardisia Herb and Apocynum. It is a kind of aglycon which mainly combines with carbohydrate to be in the form of glycosides, such as quercetin, rutin, hyperoside.


  • FOB Price: US 5 - 2000 / KG
  • Min.Order Quantity: 1 KG
  • Supply Ability: 10000 KG/per Month
  • Port: Shanghai /Beijing
  • Payment Terms: L/C,D/A,D/P,T/T,O/A
  • Shipping Terms: By sea/By Air/By Courier
  • E-mail:: info@trbextract.com
  • Product Detail

    Product Tags

    Product Name:Quercetin 95.0%

    Botanical Source:Sophora japonica extract

    Part: Seed(Dried, 100% Natural)
    Extraction Method: Water/ Grain Alcohol
    Form:Yellow to green yellow crystalline powder
    Specification: 95%

    Test Method : HPLC

    CAS Number: 117-39-5

    Molecular Formula:C15H10O7
    Molecular Weight: 302.24
    GMO Status:GMO Free

    Packing: in 25kgs fiber drums

    Storage:Keep container unopened in cool, dry place,Keep away from strong light

    Shelf Life:24 months from date of production

    Quercetin Powder: Comprehensive Benefits, Enhanced Bioavailability, and Trusted Sources

    Product Overview
    Quercetin Powder is a potent flavonoid antioxidant naturally found in fruits, vegetables, and grains such as apples, onions, and red wine . Known chemically as 3,3′,4′,5,7-pentahydroxyflavone, it boasts diverse health benefits, including anti-inflammatory, cardioprotective, and immune-boosting properties . With a molecular formula of C₁₅H₁₀O₇ and molecular weight of 302.24 g/mol, it is available in high-purity forms (≥95% HPLC) for optimal efficacy .

    Key Health Benefits

    1. Antioxidant & Anti-Inflammatory Powerhouse
      Quercetin neutralizes free radicals, reducing oxidative stress and inflammation linked to chronic diseases . Studies suggest it may inhibit enzymes like catechol-O-methyltransferase, enhancing neurotransmitter activity and vascular health .
    2. Cardiovascular Support
      By lowering blood pressure and improving blood vessel elasticity, Quercetin promotes heart health . Its ability to reduce LDL cholesterol and prevent platelet aggregation further supports cardiovascular function .
    3. Immune System Enhancement
      Quercetin modulates immune responses, potentially reducing allergy symptoms and viral replication . Clinical trials highlight its role in managing chronic prostatitis and respiratory health .
    4. Anticancer Potential
      Preclinical studies indicate Quercetin induces apoptosis in cancer cells (e.g., prostate cancer) and synergizes with chemotherapy agents .

    Overcoming Bioavailability Challenges
    While Quercetin’s low solubility and bioavailability (≤2% in humans) limit its efficacy, advanced formulations address these issues:

    • Liposomal/Nano-Encapsulation: Enhances absorption by 3.69× compared to conventional forms .
    • Combination with Bromelain or Fats: Co-administration with digestive enzymes or oils improves solubility and bioavailability .
    • Spherical Agglomerates: Lipid-based delivery systems increase water solubility by 4× and sustain release up to 92% within 8 hours .

    Recommended Usage & Safety

    • Dosage: Typical daily intake ranges from 500–1000 mg for supplements, aligning with FDA’s GRAS designation . For enhanced effects, pair with vitamin C or B vitamins (e.g., QU995® formulation) .
    • Safety: Generally safe with minimal side effects. Avoid during pregnancy due to limited safety data . Consult healthcare providers if taking antibiotics or blood pressure medications .

    Trusted Sources for European & American Customers

    1. iHerb.com: A U.S.-based platform with 97% customer satisfaction, offering globally shipped, lab-verified Quercetin products .
    2. QU995® by Quercegen Pharmaceuticals: A patented, 99.5% pure anhydrous powder combined with vitamins B3, C, and B9 for synergistic effects .
    3. PYSON CO., LTD: Supplies Quercetin granules (≥98% purity) for food supplements and beverages, compliant with EU and U.S. standards .

    Quality Assurance

    • Purity Testing: Validated via RP-HPLC with LOD 0.236 µg/ml and LOQ 0.786 µg/ml, ensuring batch consistency .
    • Certifications: Look for USP reference standards (e.g., Product No. 1351800) and ISO-compliant manufacturing .

    Conclusion
    Quercetin Powder stands out as a versatile supplement for holistic health. When choosing a product, prioritize formulations with enhanced bioavailability (e.g., liposomal or lipid-based) and purchase from reputable suppliers like iHerb or QU995® to ensure quality and efficacy. For optimal results, pair with a balanced diet and consult scientific literature for dosage guidance


  • Previous:
  • Next: