Pure Quercetin from DoNotAge.org is a natural flavonoid found in small amounts in colorful plants. This bioflavonoid supports immune health, acts as a potent antioxidant, activates sirtuins, enhances resveratrol efficiency, reduces senescent cells, and supports healthy cholesterol levels. Each capsule provides 400mg of pure quercetin dihydrate, the most effective form. Pure Quercetin is also known for supporting healthy sinuses and respiration. Backed by the DoNotAge.org Quality Guarantee, this product ensures purity and quality, adhering to GMP and ISO9001 standards. Suitable for vegans, Pure Quercetin is manufactured and stored in optimal conditions for maximum effectiveness.