I didn't think to compare the dosage amount with something like grape seed ext. But maybe they felt the rutan covers something the GSE may not??

best sources antioxidant foods list-
http://altmedicine.about.com/cs/supp...tioxidants.htm
[Berries

* Dog rose
* Crowberry
* Bilberry/wild blueberry
* Black currant
* Sour cherry
* Strawberry
* Blueberry
* Cranberry
* Raspberry
* Cloudberry

Fruit

* Pomegranate
* Grape
* Orange
* Plum
* Pineapple
* Lemon
* Dates
* Kiwi
* Clementine
* Grapefruit

Legumes

* Broad beans
* Pinto beans
* Ground nut
* Soybeans

Nuts, seeds, and dried fruit

* Walnuts
* Sunflower seeds
* Apricots
* Prunes

Vegetables
# Kale
# Chili pepper
# Red cabbage
# Peppers
# Parsley
# Artichoke
# Brussels Sprouts
# Spinach
Cereals

* Barley
* Millet
* Oats
* Corn

Roots and Tubers

* Ginger
* Red Beets


Note: This is not a complete list. There are additional food sources of antioxidants not analyzed in this study, such as garlic.

Reference

Halvorsen BL, Holte K, Myhrstad MC, Barikmo I, Hvattum E, Remberg SF, Wold AB, Haffner K, Baugerod H, Andersen LF, Moskaug O, Jacobs DR Jr, Blomhoff R. A Systematic Screening of Total Antioxidants in Dietary Plants. Journal of Nutrition 132:461-471, 2002.
Created: December 19, 2003]

PS- i noticed the buckwheat too- LOL
Mrs D or others on the Vitamin forum might be able to give more info on it also.