Abstract: A protein containing fruit juice drink comprising a fruit juice portion of 10-85% containing a citrus juice portion, a milk raw material portion of 90-15 percent by weight in which the milk raw material portion comprises whey proteins in an amount of 0.5-10 percent by weight of the finished product, and, as a sweetner, a hydrolyzed lactose, made of substantially pure lactose prepared from whey or a permeate from ultrafiltration of milk or whey, containing pure glucose and galactose derivate.In the manufacture of the juice product of the aforementioned type a whey protein solution is prepared and the fruit juice is added while stirring the mixture. Hydrolyzed pure lactose is prepared by dissolving pure lactose crystals, obtained from whey or from a permeate of ultrafiltration of milk or whey, in pure water and hydrolyzing the lactose solution at a temperature of 60.degree.-150.degree.