What is Quercetin?
Quercetin is a natural ingredient in a class of plant compounds called “flavonoids.”

Quercetin Sources
Quercetin is naturally found in many plant foods, especially in the plant epidermis or peel.

Quercetin food sources
Quercetin is found in a variety of foods, including apples, broccoli, kale, cherry tomatoes, onions, black and green tea, berries, grapes, and leafy greens.
Quercetin botanical sources
Sophora japonica is a commonly used Chinese medicine. In the dietary supplement market, quercetin is often extracted from the dried flowers and buds of the legume sophora japonica L., The main active ingredients of sophora japonica extract are rutin and quercetin.
Quercetin forms and specifications
Quercetin is a plant-based compound that has a wide range of potential health benefits. It is available in a variety of forms, including Quercetin 10% powder, Quercetin 95% powder, Quercetin 98% powder, Quercetin Dihydrate, Quercetin Anhydrous, and Quercetin Phytosome. Quercetin Phytosome is the most bioavailable form of Quercetin, meaning it is the best absorbed by the body. Quercetin Anhydrous is the most concentrated form of Quercetin, and Quercetin Dihydrate is the most stable form.
- Quercetin 10% powder
- Quercetin 95% powder
- Quercetin 98% powder
- Quercetin Dihydrate
- Quercetin Anhydrous
- Quercetin Phytosome
- Quercetin custom extract according to your specific requirement
Quercetin VS Quercetin Phytosome
Quercetin is the most common form, but quercetin phytosome is more bioavailable. Quercetin has a very low bioavailability, it’s hard for your body to absorb it.
Quercetin Phytosome, a new food-grade and lecithin-based formulation of quercetin. “Phytosome”, the term simply translates to “Phyto” + “Liposome”. Phyto means “plant”, Phytosome is a plant-based delivery system for herbs, nutrients, and other active compounds. liposome means “tiny lipid or fat particles”. It is usually made by combining the bioactive ingredient with a phospholipid.
Quercetin VS Quercetin Dihydrate VS Quercetin Anhydrous

Both quercetin and quercetin dihydrate are organic flavonoids. The main difference between them is that quercetin is a plant flavonoid, while quercetin dihydrate is a synthetic compound. In addition, the appearance of quercetin is yellow crystalline powder, while quercetin dihydrate is bright yellow.
Quercetin anhydrous and quercetin dihydrate mainly differ in the amount of water they contain. The aqueous ingredients of quercetin anhydrous are about 1% to 4%, and the sugar molecules attached to quercetin have been extracted. This means 13% more quercetin per gram for quercetin anhydrous than quercetin dihydrate.
Quercetin dihydrate has higher bioavailability when it comes to quercetin supplements.
Quercetin vs dihydroquercetin

Quercetin and dihydroquercetin are both plant flavonoids. The main difference between them is that they have different chemical compositions. Dihydroquercetin is more powerful and more bioavailable than quercetin, as it has two additional atoms of hydrogen per molecule.
In addition, quercetin and dihydroquercetin often come from different plant sources. Quercetin is commonly found in the bitter inner rind of citrus fruits, cherries, and apples, vegetables like kale and broccoli. Dihydroquercetin, also called taxifolin, is often found in milk thistle, onions, grapes, and the tree bark of some conifers.
Where to buy bulk Quercetin powder
Wuxi Cima Science Co., Ltd is a nutritional raw material manufacturer with 3 plants and one R&D center. Cima is committed to quality, purity, and integrity.
Quercetin, 98% powder, is our main product in large quantities. Our package is 25kg/drum. Please kindly send us an email if you want to know the price and technical documents such as COA, and MSDS; A free sample is available.



