IMPORTANT BIOFLAVINOID: Solgar Quercetin Complex includes the most important bioflavonoid, Quercetin, along with Ester-C Plus and Bromelain in a synergistic formula to provide immune health support. This complex also provides natural seasonal support as well as unique antioxidant protectionWHAT IS QUERCETIN: Quercetin is found in food such as onions and possesses antioxidant properties which help to stabilize cell membranes.ESTER-C PLUS BENEFITS: Ester-C Plus provides a pH neutral, non-acidic, patented form of Vitamin C that is gentle on the stomach. In addition Ester-C Plus offers the benefits of incorporating acerola berry, citrus bioflavonoids, rose hips and rutinADDITIONAL BROMELAIN: In addition to Quercetin and Ester-C Plus, these vegetable capsules also feature bromelain which is a natural enzyme derived from pineappleKOSHER, GLUTEN FREE & SUITABLE FOR VEGANS: These vegetable capsules are KOF-K Kosher certified and are certified gluten free. They are free of: gluten, wheat, soy, dairy, yeast, sugar, and sodium. They are also free of artificial flavors, sweeteners, preservatives and colorsProduct Description: Solgar's Quercetin Complex includes the important bioflavonoid Quercetin in a synergistic formula with Ester-C Plus and Bromelain to provide unique antioxidant protection as well as natural seasonal support. Quercetin is found in onions and other foods. It possesses antioxidant properties which help to stabilize cell membranes. Ester-C Plus provides a patented, pH neutral (non-acidic), form of vitamin C that is gentle on the stomach. Ester-C Plus offers the additional benefits of incorporating acerola berry, citrus bioflavonoids, rutin and rose hips. This formula also features bromelain, a natural enzyme derived from pineapple.Suggested UseAs a dietary supplement for adults, take two (2) vegetable capsules twice daily, preferably at mealtime, or as directed by a healthcare practitioner.