Launching the fifth flavor in its protein and antioxidant drink, mix1, Boulder, Co, has introduced Tangerine to current mix1 beverage flavors Mango, Blueberry-Vanilla, Lime and Mix Berry. Blending carbohydrates, proteins and nutrients, each serving contains 15 grams of whey protein isolate, 23 vitamins and minerals, 3 servings of fruits/vegetables and antioxidants.