Beneficial Flavonoids Help To Stop Free Radical Activity! Now Grape Seed is highly concentrated natural extract derived from grape seeds. It contains a number of unique beneficial flavonoid compounds (min 90% total polyphenols) which have demonstrated free radical and oxidant scavenging activity. Grape Seed is one of the most potent anti-oxidants found in nature. Rich in bioflavonoids, radical fighters, it helps prevent damage to cells by free radicals. This extract is at least 15 to 25 times more powerful than Vitamin E in neutralizing iron and oxygen free radicals. 100 Vcaps