INGREDIENTS: Each serving (2 capsules) contains 500 mg of Quercetin (derived from the flower buds of the Japanese pagoda tree, Sophora Japonica), 100 mg of organic aloe vera powder, and 3 mg of silicon dioxide as a drying agent (a naturally occurring earth mineral).


DIRECTIONS: As a dietary supplement, take two capsules twice a day with meals or as directed by a qualified healthcare provider.


Quercetin belongs to a class of antioxidants called flavonoids that give fruits and vegetables their bright colors. Flavonoids support capillary wall stability and healthy collagen development, balance immune response, and provide cardiovascular protection by reducing the oxidation of LDL cholesterol.


Since many IC/BPS patients tend to avoid many of the foods that contain flavonoids due to their high acid levels, it is recommended to supplement a healthy portion of these fruits and vegetables with quercetin instead which is less likely to cause urinary or stomach distress.


Mast cells have been found to be raised in those suffering with IC. As a result, IC bladders also contain about double as much histamine as a healthy bladder. Histamine plays a role in inflammation. Quercetin has been shown to inhibit the release of histamines and other immune mediators, which are thought to play a part in some IC/BPS and nonbacterial prostatitis symptoms including nocturia, daytime frequency, pain, burning, pressure, and pain with sex, especially in those with a history of allergies, migraines and irritable bowel syndrome (IBS).


Quercetin also decreases production of the COX-1 and COX-2 enzymes that cause systemic inflammation. It has been shown in studies to be an anti-inflammatory agent.

Quercetin is the anti-histamine component in Cysta-Q (Farr Laboratories) and CystoProtek, both studied for IC/BPS with successful results.


All Desert Harvest supplements are vegan, gluten-free, IC/BPS friendly, Kosher certified and contain no fillers or artificial ingredients. Desert Harvest follows strict Good Manufacturing Practices and are cGMP compliant.

Quercetin - 90 Capsules

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These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.

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These statements have not been evaluated by the Food and Drug Administration and are not intended to treat or diagnose any disease or health condition. The information on this website is intended for educational and informational purposes only. It is recommended that people check with their doctors before taking herbs and supplements, to ensure that there are no contraindications with prescription medications. The information on this site is for educational purposes only.