Quercetin has been shown to be one of the most useful and physiologically active flavonoids. This potent bioflavonoid can be used for maintaining or supporting the proper levels of enzymes and physiologic factors necessary for normal respiratory and sinus health, to help support seasonal respiratory challenges. For the best results, take 2 capsules twice per day between meals, or as directed by your healthcare professional.

Vital Nutrients is dedicated to manufacturing high-quality supplements that promote general health and vitality. Our stringent standards and extensive laboratory analyses have led to our supplements being used and trusted by hospitals, healthcare practitioners and consumers worldwide. Nothing is more important than the quality of our supplements. Vital Nutrients products may help support specific health concerns, as well as complement an existing healthy lifestyle. And because we independently test each and every raw material and finished product at U.S. labs, purity and potency can be guaranteed in every capsule.