Quercetin is called the Master Flavonoid, and is one of the most abundant flavonoids in the human diet. A flavonoid is a naturally occurring plant pigment found in fruits and vegetables with numerous health promoting properties. They are powerful antioxidants that neutralize free radicals, and they are natural anti-inflammatories. Quercetin has anti-viral, anti-microbial, and anti-allergenic properties. Nano Quercetin has been nano-particle sized to promote superior absorption into the bloodstream and the cells.