Solgar Quercetin Complex includes the important bioflavonoid Quercetin in a synergistic formula with Ester-C Plus and Bromelain to provide unique... Solgar Quercetin Complex with Ester C Plus is exclusively formulated by Solgar and combines the important bioflavonoid Quercetin with Ester-C and Bromelain. This unique complex supports immunity as it is a proprietary formula and contains additional natural plant bioflavonoids, powerful antioxidants that naturally accompany Vitamin C in fruits and vegetables. For over 70 years, Solgar has been committed to sustainability, using 100% recyclable amber glass bottles. They believe that cleaner is better, crafting vitamins and minerals in small batches to ensure consistency and purity. Solgar products meet the industry recognized “Gold Standard” for excellence, made using naturally sourced ingredients and innovating since 1947. It is an exclusive complex designed to strengthen the immune system.