Inability to digest milk sugar - lactose - is called lactose intolerance. Gas, abdominal bloating, and diarrhea are common symptoms for people who have trouble digesting lactose. Dairy Again Lactase Enzyme from Webber Naturals contains the enzyme lactase to help improve the digestion of foods containing lactose (milk and other dairy products) | Webber Naturals Dairy Again Lactase Enzyme Chewable Size 60s