Like many other substances in natural medicine, quercetin is a type of plant-based chemical or phytochemical. In fact, quercetin is a common chemical pigment found in the rinds and barks of a wide variety of plants. Quercetin, a flavonol or potent antioxidant, is found in red wine, onions, green tea, apples, berries and cruciferous vegetables.1
Its value in treating and preventing many illnesses has been recognized for decades and has made it a very popular component in the herbal and ?supplement marketplace. ?
