By far the most successful nutritional suppplement on the market today is the whole fruit puree of the Mangosteen fruit, & it has plenty of scientific proof to back it up. Check out the www.usenature.com/mangosteen.htm site, & in particular look at the www.pubmed.net.com typing in (mangosteen & xanthones). Now they have discovered that the O.R.A.C (oxygen radical absorbance capacity) is nearly 5 times its nearest edible rival prunes.
Mangosteen 17,000 to 24,000 orac to prunes 5,770 orac. kale of all things has more orac than cranberries 1,770 to 1,750. This is all measured by the ounce of each botanical.