Mango juice contains the vital nutrient, potassium that assists your muscles, heart and nerves’ functions. This advantageous mineral also regulates the balance of fluids in your body and your blood pressure. Consuming mangoes or mango juice is the best way to provide your body the crucial nutrient, Vitamin A. It acts as the best defender against eye problems i.e. dry eyes and night blindness in addition to promoting good eyesight.