Quercetin is a high-bioflavonoid, found in large quantities in apples and onions. Quercetin is helpful in cases of allergies and inflammation. Solgar’s Quercetin Complex dietary supplement is a combination of quercetin with vitamin C (prepared according to Solgar’s Ester-C Plus patent). It also contains bromelain, wildflower, aserola, and citrate bioflavonoids. The other nutritional elements of the Quercetin Complex enhance the anti-inflammatory and antihistamine effect of quercetin. * The above information on the ingredients of the product is a result of studies. They are not an EFSA opinion.