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Natural Ingredients

Quercetin Powder

Quercetin Powder

Product No.: NF222
Appearance:Yellow powder
Specification: 98%
Solubility in water: 1.6 mg/L (25 °C) mg/mL (20 °C)
Standard: GB, USP, EP
Certifications: ISO, HACCP, KOSHER, HALAL
Delivery: Shipped in Same day from stocks
Drum: 20,25kg
Pallet:12drums/pallet,or 30cartons/pallet
Storage: Well-closed, dry place with constant 2-8℃
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Quercetin is a potent antioxadant and has anti-inflammatory activity, protecting cellular structures and blood vessels from the damading effects of free radicale. It improves blood vessel strength. Quercetin powder can inhibit the activity of catechol-O-methyltransferase that breaks down the neurotransmitter norepinephrine. This effect may lead to elevate thelevels of norepinephrine and an increase in energy expenditure and fat oxidation. It also means quercetin acts as an antihistamine leading to the relief of allergies and asthma. As an antioxidant, it reduces LDL cholesterol and offers protection from heart diaease.


Product Name

Quercetin Dihydrate


Min 95.00%




Yellow Powder

Melting point


Drying Method

Vacuum drying


Ethanol & water

Particle Size

100%Through 80 mesh

Loss on Drying(5g/120℃)

Max 12.0%

Ash content(2g/525℃/3hrs)

Max 0.5%

Reducing sugars

Not be detected


Max 1000ppm


■ Help manage a number of inflammatory health problems.

■ Flavonoids, including quercetin anhydrous are important anti-inflammatories.

■ Heart and blood vessel-related disorders.

■ Help lower pain associated with autoimmune conditions, such as arthritis, as well as infections.

■ Quercetin anhydrous is added to some athletic supplements because it’s believed to help increase athletic performance and endurance.



The bioavailability of quercetin in humans is low and highly variable (0-50%), and it is rapidly cleared with an elimination half-life of 1-2 hours after ingesting quercetin foods or supplements. Following dietary ingestion, quercetin undergoes rapid and extensive metabolism that makes the biological effects presumed from in vitrostudies unlikely to apply in vivo.

In vitro pharmacology

Quercetin has been reported to inhibit the oxidation of other molecules and hence is classified as an antioxidant.Quercetin contains a polyphenolic chemical substructure that stops oxidation by acting as a scavenger of free radicals that are responsible for oxidative chain reactions.

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