A.F.
I am not familiar with the particular drink, but I took probiotics while nursing my DS for a year -- they are great for you and the baby and help to keep yeast content down (so there is less of a chance of thrush). It was great for us. I took the pill form. Even now, if my kids have to be on antibiotics, I open up the capsule and put it in their drink cups (my bottle says that it is AOK for infants and kids). Thankfully, it has been a long while since we had to have antibiotics (*knock on wood*) -- a year :)
Best wishes!