Ultimate Flora Critical Care Go Pack provides 50 billion live cultures in a convenient shelf stable (no refrigeration required) formula. It is a 12 strain probiotic formula that is dairy, gluten, and soy-free. It has been formulated to support overall health with a unique strain combination. As it does not require refrigeration, Go Packs are ideal for those that travel or have a tendency to forget to take their probiotic before they leave home. By having your probiotic in a place you frequent, you are more likely to see it, and remember to take it.