By breaking down lactose (milk sugar) it helps make dairy foods easier to digest and helps to prevent uncomfortable symptoms. This product is a dietary supplement which contains natural lactase enzyme. It is NOT A DRUG. May be used by everyone ages 4 years and up. Because it goes to work quickly, more lactose (milk sugar) can be broken down overall. This product begins to work more than TWICE AS FAST as Ultra strength products previously available. Dosage is the same convenient single pill as Ultra