Tuna contains high amount of niacin and phosphorus. We are using tuna cans to prepare this recipe but research suggests that canned tuna contains high amounts of omega-3 fatty acids along with vitamin B, Selenium and potassium.
One serving (100g) of Tuna Sandwich (Bread roll excluded) has 106 calories (32 calories from fat), 3.6g total fat (0.7g saturated fat), 24mg cholesterol, 145mg sodium, 220mg potassium, 4.6g total carbohydrates (1g dietary fiber, 1.9g sugars), and 13.3g protein.
Tuna sandwich is a good source of vitamin A and an excellent amount of vitamin C, about 18 percent of vitamin A and 40 percent vitamin C.
It's also a good source of selenium.