Quercetin is a bioflavonoid found naturally in fruits and vegetables, particularly apples and red onions. It is also a water-soluble natural pigment with highly antioxidant properties. Quercetin from onion has beneficial properties in the metabolism of lipids and in the maintenance of vascular and venous health. Through Solgar Quercetin Complex 50 caps we can enjoy the properties of Quercetin. Quercetin Complex is exclusively formulated by Solgar and is a proprietary method of providing a synergistic formula with Quercetin, Ester-C ® and Bromelain. Ester-C ® Plus is a proprietary method of vitamin C supplementation at a neutral (non-acidic) pH to prevent stomach irritation. In addition, Ester-C ® Plus contains the metabolites that occur naturally with vitamin C in nature. A special manufacturing process is used to form a unique calcium ascorbate metabolite complex. Ester-C ® is a registered trademark of The Ester C Company. Manufactured under US Patent Nos. 6,197,813 and 6,878,744 and corresponding foreign patents. Format: Bottle of 50 vegetable capsules. How to use: Food supplement for adults, take two (2) vegetable capsules a day, preferably with meals or as directed by a specialist. The expressly recommended daily dose for this product should not be exceeded. Ingredients: Vitamin C, quercetin, bromelain, acerola fruit powder extract, rose hip powder, rutin, citrus flavonoids, vegetable stearic acid, vegetable magnesium stearate, silicon dioxide, microcrystalline cellulose. Vegetable capsule: hydroxypropyl methyl cellulose. Nutritional information: for 2 caps Vitamin C 500mg (calcium ascorbate, threonate [Ester-C®]) quercetin 500mg bromelain 50mg (2000 GDU/g) (gelatin digestive units) Acerola fruit extract powder 50mg (4:1) Rosehip Powder 50mg Routine 10mg citrus flavonoids 5mg L