Fast Act Supplement Contains A Natural Lactase Enzyme That Your Body May Not Produce Enough Of. It Works Naturally And In Harmony With Your Body To Help You Digest Dairy. This Is A Dietary Supplements, Not A Drug, And May Be Used By Adults And Children 4 Years And Over. May&Nbsp;Be Used Every Time You Eat Food Containing Dairy-Ever Meal, Every Snack, Every Day. For The Prevention Of: Gas, Bloating, And Diarrhea Associated With Digesting Dairy.*