Calshake Calshake is an energy-dense, powdered nutritional supplement containing protein (milk protein), fat (vegetable oil) & carbohydrate, designed for the dietary management of patients with increased energy requirements e.g. patients with cystic fibrosis, cancer or HIV/AIDS. When reconstituted with whole milk, Calshake provides Approx. 2kcal/ml. Calshake is available in a choice of five delicious flavours: strawberry, vanilla, chocolate, banana & neutral. Simply choose above! Calshake is gluten, nut, egg & wheat free. Contains lactose.