from their website:
5. How often should you drink DanActive?
To enjoy its benefits, Dannon recommends drinking one bottle of DanActive per day. Drinking DanActive each morning is a smart and simple habit that helps strengthen your body's defenses. But, because it's so delicious, lots of people enjoy more than one bottle of DanActive throughout the day.
i bet if anything you're just gonna get the shits...which isn't really abnormal for you.