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Quercetin/Sophora Japonica Flower Extract

Product Name: Quercetin/Sophora Japonica Flower Extract
Botanical Source: Sophora Japonica L
Part Used: Flower
Specification: Quercetin 95%, 98%
Appearance: Yellow Fine Powder

Quercetin is a plant polyphenol from the flavonoid group, found in many fruits, vegetables, leaves, and grains. It can be used as an ingredient in supplements, beverages, or foods.

Quercetin is pentahydroxyflavone achieved from rutin which is hydrolyzed by dilute sulphuric acid. This product has functions of eliminating phlegm, relieving cough and a certain degree of relieving asthma. Meanwhile, it can reduce blood pressure, strengthen capillaries, decrease capillary fragility, reduce blood lipid, dilate coronary artery, increase blood flow of coronary artery etc. It is used for the treatment of chronic bronchitis, and the adjuvant therapy of coronary heart disease and hypertension.


Seasonal  Allergies are  a big problem which troubles most of people. Now we have found a good way to  Survive from it, that is Trying Natural Remedies---  Quercetin.

Quercetin is a powerful flavonoid with a wide range of health  benefits, including its ability to reduce inflammation & Anti-Allergy  Effects, eliminate pain, protect against cardiovascular diseases, lower blood  pressure, manage diabetes, prevent certain cancers, boost the immune system, and  reduce irritation of the skin.


1.It has good effect of expectorant, antitussive and antiasthmatic:

2.Decreasing blood pressure and blood fat;

3.Enhancing the resistance of the capillaries and reducing fragility of capillary;

4.Expanding coronary arteries and increasing coronary blood flow and so on:

5.Mainly used in the treatment of chronic bronchitis and it also has the role of adjuvant therapy in patients with coronary heart disease and high blood pressure.


1.In the cosmetic field;

2.Nutritional supplement;



Q1: Are you trading company or manufacturer ?

A: We are Manufacturer.

Q2: How long is your delivery time?

A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

Q3: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q4:What is your terms of payment ?

A: 100% TT in advance,OA ,L/C acceptable.If you have another question, please feel free to contact us as below:


* OTC stock No. 870480. About 20 years experience in plant extract industry

* Awarded FSSC 22000, ISO 9001, HACCP, ORGANIC, KOSHER, HALAL and Manufacturer license

* Clean workshop and Manufacture base operation is controlled according to the GMP standards strictly

* Quality control with testing equipments: AAS, MICROBE, HPLC, TLC, GC, UV, PPSL(irradiation test)

* Guarrantee aftersale service and ensure every customer satisfaction

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Hunan Huakang Biotech Inc., was founded in 2003, specializing in the processing and production of extracting active ingredients from natural plants, tablets, capsules, confectionery punches.
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