QUERCETIN is a flavonol, a type of flavonoid compound found naturally in apples, onions, citrus, sage, tea, red grapes and many other fruits and vegetables. Flavonoids are plant pigments that exhibit potent antioxidant and anti-inflammatory properties.
Quercetin is widely recognized as one of the most pharmacologically active known flavonoids. It is considered by many to be one of nature’s most active biological response modifiers. The biological activity and benefits of numerous medicinal plants may be associated with their high quercetin levels.