EnduBerry Nu is an endurance and fitness booster designed to help recreational athletes improve their running performance. The company reports that, in a placebo-controlled study, runners ran a 5k an average of 25 seconds faster after taking EnduBerry Nu over seven days. EnduBerry Nu is made from Haskap berries and contains cyanidin-3-glucoside antioxidant anthocyanin. According to the company, it is an ideal ingredient for sports performance supplements, electrolyte drinks, and pre-workout formulas.