Thanks for your response. I understand both are forms of Tobramycin, in addition, I'm gathering that the IV form may be in line when hospitalized (i.e., inhaled isn't effective enough). However, I was wondering if the inhaled form has decreased the need for hospital admissions because it truly keeps PA at bay. Perhaps I made my post even more confusing now! <img src="i/expressions/face-icon-small-smile.gif" border="0">