Purely-E from North American Herb & Spice delivers raw food vitamin E from sunflower seed. It's the only 100% food-source non-GMO vitamin E on the market. North American Herb & Spice uses sunflower seeds because soy sources of vitamin E can be contaminated by GMOs. A true food supplement, this is not an isolate. Think of Purely-E as the way to get your food-source vitamin E. Gradual release caps.