Active Pharmaceutical Ingredients
What Is Quercetin Powder?
Quercetin powder appearance is yellow to greenish yellow crystalline or powder. And it extract from Sophora japonica.It is a very effective flavonoid,and belong to olyphenol family. And nature exsit in fruit ( apple berry ) and vatageble like (onions kale)
For it have a strong ability antioxidant activity,and also used in healthcare supplements.
COA
| Analysis | Description | Test Method |
| Appearance | Yellow Powder | Visual |
| Odor | Characteristic | Nasil |
| Identification | Conform with reference sample | HPLC |
| Mesh Size | 100% pass 80 mesh | CP2020 |
| Moisture Content | 9% -12% | GB5009.3 |
| Ash Content | ≤ 5.0% | GB5009.4 |
| Heavy Metals | ≤ 10 ppm | CP2020 |
| Arsenic (As) | ≤ 2.0 ppm | BS EN ISO17294-2 2016 2016 |
| Lead (Pb) | ≤ 3.0 ppm | BS EN ISO17294-2 2016 |
| Cadmium (Cd) | ≤ 1.0 ppm | BS EN ISO17294-2 2016 |
| Mercury (Hg) | ≤ 0.1ppm | BS EN ISO17294-2 2016 |
| Total Plate Count | ≤ 10,000 cfu/g | ISO 4833- 1:2013 |
| Yeast and Mold | ≤ 100 cfu/g | ISO 21527-2:2008 |
| Escherichia Coli | Absent | ISO 16649-2:2001 |
| Salmonella/25g | Absent | ISO 6579-1:2017 |
| Assay | ≥ 98% | UV |
Benefits of Quercetin Powder
1.Antioxidant & Anti-inflammatory: Quercetin powder neutralizes free radicals, reducing oxidative stress linked to chronic diseases. Studies show it lowers inflammatory markers like C-reactive protein (CRP) and interleukin-6 (IL-6).
2.Allergy Relief: As a natural antihistamine, it stabilizes mast cells, easing symptoms like sneezing and runny nose within hours to days.
3. Cardiovascular Support:It could make the endothelial function more better, make the blood pressure lower and reduce the LDL cholesterol oxidation, and reduce the the risk of heart disease.
4.Immune Enhancement:Quercetin powder could enhanced the the defenses ability to antiviral system. And support the immune cell activity., it also could help he reccovery from infections.
5.Exercise Performance: Some trials suggest it boosts endurance by improving mitochondrial function and reducing fatigue.
2.Allergy Relief: As a natural antihistamine, it stabilizes mast cells, easing symptoms like sneezing and runny nose within hours to days.
3. Cardiovascular Support:It could make the endothelial function more better, make the blood pressure lower and reduce the LDL cholesterol oxidation, and reduce the the risk of heart disease.
4.Immune Enhancement:Quercetin powder could enhanced the the defenses ability to antiviral system. And support the immune cell activity., it also could help he reccovery from infections.
5.Exercise Performance: Some trials suggest it boosts endurance by improving mitochondrial function and reducing fatigue.
Who Should Avoid Quercetin?
Pregnant/Breastfeeding Women: Safety data is lacking; avoid supplementation.
Kidney Disease Patients: High doses may worsen renal function.
Caffeine-Sensitive Individuals: Quercetin can slow caffeine metabolism, prolonging its effects.
Those on Medications: It interacts with blood thinners (e.g., warfarin), blood pressure drugs, and immunosuppressants (e.g., cyclosporine), increasing side effects. Consult a doctor before use.
Kidney Disease Patients: High doses may worsen renal function.
Caffeine-Sensitive Individuals: Quercetin can slow caffeine metabolism, prolonging its effects.
Those on Medications: It interacts with blood thinners (e.g., warfarin), blood pressure drugs, and immunosuppressants (e.g., cyclosporine), increasing side effects. Consult a doctor before use.
Where to buy Quercetin powder?
Buy Quercetin Powder - Contact SoST Biotech for:
✓ Bulk discounts (MOQ 25kg)
✓ FREE 20g samples with COA
✓ OEM services/Specification Customization
Email:ericyang@xasost.com
Product Data Sheets
| Analysis | Description | Test Method |
| Appearance | Yellow Powder | Visual |
| Odor | Characteristic | Nasil |
| Identification | Conform with reference sample | HPLC |
| Mesh Size | 100% pass 80 mesh | CP2020 |
| Moisture Content | 9% -12% | GB5009.3 |
| Ash Content | ≤ 5.0% | GB5009.4 |
| Heavy Metals | ≤ 10 ppm | CP2020 |
| Arsenic (As) | ≤ 2.0 ppm | BS EN ISO17294-2 2016 2016 |
| Lead (Pb) | ≤ 3.0 ppm | BS EN ISO17294-2 2016 |
| Cadmium (Cd) | ≤ 1.0 ppm | BS EN ISO17294-2 2016 |
| Mercury (Hg) | ≤ 0.1ppm | BS EN ISO17294-2 2016 |
| Total Plate Count | ≤ 10,000 cfu/g | ISO 4833- 1:2013 |
| Yeast and Mold | ≤ 100 cfu/g | ISO 21527-2:2008 |
| Escherichia Coli | Absent | ISO 16649-2:2001 |
| Salmonella/25g | Absent | ISO 6579-1:2017 |
| Assay | ≥ 98% | UV |
Packing & Shipping
What We Can Do?
