Antibiotics fight infections caused by bacteria. They should not be used to treat infections caused by viruses (such as the flu) or types of fungi, which include yeasts and molds.
If you have cystic fibrosis, you have to pay more attention than most people to what you eat because sticky mucus in the pancreas interferes with the proper digestion of your food and causes blockages in the intestines.
If you have cystic fibrosis, you have sticky mucus in your digestive system. You need to take enzymes to digest food and medications to stay regular. Doing this will help you grow, maintain your weight, and fight lung infections.