Pancrex V tablets, capsules & powder all contain the active ingredient pancreatin, which is a mixture of digestive enzymes normally released by the pancreas to digest food. Pancreatin contains the pancreatic enzymes lipase, amylase & protease. These assist the digestion of fat, carbohydrates & proteins. The enzymes in Pancrex V are extracted from pig pancreas glands. Pancreatin supplements are given by mouth in conditions where the natural secretion of these enzymes by the pancreas is reduced or absent. The enzymes in pancreatin work by digesting food as it passes through the intestines. The medicine must be taken at the same time as a meal or snack to allow the enzymes to mix with the food.