The most appropriate response would be to tell the parents that Generic enzymes are not as effective as the brand-name one and therefore, the matter should be discussed with the healthcare provider. Cystic fibrosis is an inherited disorder that causes severe damage to the lungs, digestive system and other organs of the body. It affects the cell that produce mucus, sweat and digestive juices such that the secreted fluids are thin and slippery.The pancreas in people with this disorder produces a thick mucus that blocks the secretion of enzymes needed for digestion, called the pancreatic insufficiency.