Quercetin is a yellow/orange bioflavonoid which gives color to fruits, vegetables and flowers. Quercetin has the highest antioxidant effect of any flavonoid, acting as a free radical scavenger. Best known for its effectiveness in treating asthma and allergies, Quercetin also acts as an antiviral and anti-inflammatory agent. It inhibits the release of histamine from mast cells and may block the production of cyclo-oxygenase and leukotrienes. Quercetin has healing properties that NSAID medications and antihistamines lack; it simulates structural and cellular repair of collagen, elastin, and membranes. This helps strengthen all mucus membranes, including those found in the lungs, sinuses and digestive system. Quercetin triggers true regeneration of tissues so that over time allergies and respiratory symptoms decrease in severity and frequency.

Adult dosing range: 25-1,000 mg daily in divided doses. For chronic allergy pain, inflammation, asthma or sinusitis: 500-6,000 mg daily in divided doses.