highest potency available in the uk, a safe but powerful dose,a highly active flavonoid, one of the most researched,fast release tablet, specially coated for ease of swallowing,popular with sports people as well as those working outside during the flowering seasonquercetin belongs to a class of water-soluble plant pigments called flavonoids and can be found in onions, apples, green and black tea. flavonoids have the ability to neutralise free radicals, converting them to be less reactive compounds therefore reducing their potential to harm cells. quercetin is actually the most researched bioflavonoid used in human trials and scientists are very excited by its potential benefits to health. one of the most recent studies demonstrated its importance to cardiovascular health, but for more information on this fascinating nutrient, simply search it online. in addition to its antioxidant properties, it is also involved in inhibiting the production and release of histamines.this is a high strength supplement, which is borne out by the fact that an average apple contains between 5mg and 10mg of quercetin. we use pure quercetin in a form that is easy to absorb.