There is now a children's form of ProViotic too, the probiotic that Harvard professor of microbiology Andrew Onderdonk called "striking" for its ability to destroy disease-causing bacteria such as Escherichia coli, Salmonella and Listeria, bacteria that could previously be treated only with strong antibiotics. The product comes in sachets whose contents dissolve in water or juice for easy intake, even by babies as young as 8 months.