Maintains mast cell function and degranulation*  *Quercetin has been shown to be one of the most bioactive flavonoids. Research suggests a supportive role for cellular, immune and cardiometabolic health.    Quercetin offers bioflavonoid support for cellular, cardiometabolic and immune health, including mast cell function.*

Quercetin Supplemental Facts Amount Per Serving each vegetarian capsule contains: quercetin 250 mg. other ingredients: hypoallergenic plant fiber (cellulose), vegetarian capsule (cellulose, water) 2-4 capsules per day, in divided doses, between meals.