Compare to Lactase Enzyme in Lactaid Fast Act (This product is not manufactured or distributed by McNeil Nutritionals, LLC, the distributor of Lactaid Fast Act). Helps prevent gas, bloating & diarrhea associated with digesting dairy. Makes dairy products more digestible. Easy-to-swallow caplets. Single-serve packets: 1 caplet per serving. This product offers preventive relief from gas, bloating and diarrhea that is associated with digesting dairy.