Wild blueberry extract concentrates the antioxidant compounds found in wild blueberries, most often anthocyanins. Wild varieties pack more of these compounds per gram than cultivated blueberries. People take the extract to boost antioxidant capacity and to help sharpen thinking or support heart health. Scientists are still working to confirm these effects.
You typically take it in capsule form with a meal to improve absorption. High doses can cause mild stomach upset in some people.