Milk is a great source of calcium, with one 250ml glass of milk providing 39per cent of the RDA for calcium.On the packet it has the nutrition information - energy 546kj/131 kcal protein 8.6g carbohydrate 15.6g of which sugars 14.5g fat 4.2 of which saturates 2.6g fibre 0.1g sodium 0.2g Which is quite surprising as there really is not that much in the straws.