NaturVet's Digestive Enzymes with Prebiotics and Probiotics contain a source of: Alpha-Amylase which can hydrolyze starch; Protease which can hydrolyze proteins; Cellulase which can break down cellulose and Lipase which can hydrolyze triglycerides. Prebiotics (FOS) help to support your pet's naturally occurring beneficial bacteria while Probiotics contain a blend of live/viable naturally occurring microorganisms recommended to help support a healthy digestive tract and maintain a healthy immune system. Digestive Enzymes with Prebiotics and Probiotics help aid in digestion therefore maximizing the nutritional benefits of your pet food. Digestive Enzymes with Prebiotics and Probiotics are recommended to be fed with every meal. NaturVet's Digestive Enzymes with Prebiotics and Probiotics are made in the USA. 100% Money Back Guarantee!