Dr. Perlmutter's Quercetin Immune† includes powerful and scientifically studied antioxidant ingredients, helping you maintain a healthy immune system every day.† Quercetin Immune contains 500mg of Quercetin, a clinically studied, powerful plant flavonoid. Rose Hips and Acerola Cherry add 100% of the Daily Value of antioxidant Vitamin C (90mg), enriched with 100% of the Daily Value of Quercetin-chelated Zinc (11mg)—plus 300% of the Daily Value of Vitamin D (2,400 IU) as D3 from a culture of Saccharomyces cerevisiae). We have also included 500 Million CFU of Probiotic Bacillus subtilis DE111® to support immune and digestive health.† †These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.