Sparkling Low Calorie Flavoured Soft Drink with Sweeteners. Extra taste AND no sugar. The taste that you can't describe. Because there's nothing like it. IRN-BRU Xtra is ideal for an everyday treat on the go or to share at home. From pizza and burgers with your pals, to an amazing home cooked meal with the family IRN-BRU will be the perfect pairing!. For that extra phenomenal low calorie no sugar taste, IRN-BRU Xtra soft drinks are best served chilled or over ice. Got the taste for more? Keep an eye out for our IRN-BRU, IRN-BRU Sugar Free and IRN-BRU 1901 variants too!. Extra taste AND no sugar. The taste that you can't describe. Because there's nothing like it. IRN-BRU Xtra is ideal for an everyday treat on the go or to share at home. From pizza and burgers with your pals, to an amazing home cooked meal with the family IRN-BRU will be the perfect pairing!. For that extra phenomenal low calorie no sugar taste, IRN-BRU Xtra soft drinks are best served chilled or over ice. Got the taste for more? Keep an eye out for our IRN-BRU, IRN-BRU Sugar Free and IRN-BRU 1901 variants too!