The original lactase dietary supplement. Active Ingredients: Per 3 Caplets: Sodium 5 mg; Lactase Enzyme 9000 FCC Units; Mannitol; Cellulose; Sodium Citrate; Magnesium Stearate Uses: Helps prevent: gas, diarrhea, bloating by making dairy foods easier to digest.* How does LACTAID Supplement work? LACTAID is a dairy digestive supplement that contains a natural enzyme. LACTAID breaks down lactose, a milk sugar, making dairy foods easier to digest.