Karoun Dairies, San Fernando, Calif., launched Blue Isle Mediterranean yogurt drinks in four flavors: plain, strawberry, blueberry and pomegranate.  The yogurt drink is sold in 6-ounce and 32-ounce bottles for a suggested retail price of 99 cents and $3.99, respectively.  One cup of a fruit-flavored variety contains 170 calories, 1 gram of fat and 7 grams of protein. It contains 10 live and active cultures and probiotic cultures. It will be available nationally in natural food stores, like Whole Foods and Sprouts, at the end of April.