Dragon fruit is low in calories but packed with essential vitamins and minerals. It also contains a substantial amount of dietary fiber. * Calories: 136 * Protein: 3 grams * Fat: 0 grams * Carbohydrates: 29 grams * Fiber: 7 grams * Iron: 8% of the RDI * Magnesium: 18% of the RDI * Vitamin C: 9% of the RDI * Vitamin E: 4% of the RDI