There are an infinite number of medicines that CF patients may use, but only five are available exclusively for CF patients. Tobramycin, an antibiotic, comes in two forms, known and Tobi and Tobra. Tobi is inhaled through a nebulizer, while Tobra is given intravenously through a PICCline, peripheral IV, or port. Colistimethate is also an antibiotic given either inhaled or intravenously, and is called Colistin in both cases. Hypertonic saline is just what you think it is: saltwater. Often used in the 7% concentration, it is inhaled and the salt dries out the lung cells, forcing the body to concentrate more water to the lungs. In turn, the cells take in water to neutralize the effect of the salt, and the cilia in the lungs are able to move again. Pulmozyme is a geneticly enhanced drug that breaks down the DNA which makes mucus in the lungs so thick, so it is easier to cough up. Finally, aztreonam, better known as Cayston, just passed FDA approval last year, and is another inhaled antibiotic.