I have to say that it is not the best choice for babies, but she did not like her own baby yogurt and wanted to try mine, so I fed her a couple of spoons. It seems that she is ok with it. So I guess for a normal 2 years old, it should be fine too.
However I will opt for organic yogurt for kids unless your child absolutely loves only the taste of activia. It was a "better-some-food-than-no-food" scenario in my baby's case.