Quercetin Complex is a unique complex that supports and maintains immunity. __Key Benefits:__ - Ester-C is easy on the stomach - Quercetin and bromelain are supportive throughout the seasons - Helps to protect cells from oxidative stress - Allows increased iron absorption to help reduce fatigue Solgar Quercetin Complex 100 capsules include the important bioflavonoid Quercetin in a synergistic formula with Ester-C Plus and Bromelain to provide unique antioxidants and immune health support. The formula is exclusive to Solgar. Quercetin is naturally found in onions and other foods as a non-citrus bioflavonoid that works well in conjunction with vitamin C. It possesses antioxidant properties which help to stabilise cell membranes. The bioflavonoids are found naturally in fruit, vegetables and herbs. This exclusive formula for the Solgar Quercetin Complex vegetable capsules is unique in that it uses Ester-C, a form of Vitamin C which is non-acidic and highly bioavailable. This makes it less irritable on the stomach. 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. The Solgar Quercetin Complex with Ester-C has been widely reviewed as a helpful daily supplement. _The vegetable capsules are Kosher, Vegetarian and Vegan._