Blackberries are an edible fruit containing powerful antioxidants. These berries contain vitamin C, potassium, and anthocyanin extract that help support cardiovascular health. Vitamin C also boosts the immune system and helps with wound healing. The vitamin K in blackberries helps with blood clotting and bone health. The fruit also contains fiber to help with digestion. The antioxidants in blackberries helps to protect against cancer and heart disease.