Other U.S. food makers are planning versions of the health-oriented item following the success of Dannon's Activia, a yogurt filled with live bacteria.

The Dannon Company has added LGG, a natural probiotic culture, to its Danimals Drinks, a line of drinks specifically made for kids. LGG will also be added to Danimals Cups in April. Probiotics are used as natural components in health-promoting foods such as yogurt.