I HAVE 2 SONS W/ CF 7 &11 AND MY OLDEST HAS BEEN "COLONIZED W/PSEUDO.FOR MANY YEARS AND HAS BEEN ON INHALED "TOBI" FOR SEVERAL YEARS! WE HAVE BEEN DOING THE ON AND OFF 28 DAY CYCLE FOR YEARS, BUT THE THING ABOUT IT IS THIS, IT DOES HELP TO "CONTROL" THIS PSEUDOMONAS. THEY HAVE LOTS OF "BUGS" IN THEIR LUNGS SO WE'VE BEEN ON MANY IV AND INHALED AND ORAL DRUGS- WE HAVE LEARNED NOT TO "SWEAT THE SMALL STUFF" BECAUSE THIS IS THE LIFE WE LIVE WITH OUR CHILDREN AND THEY REACT THE WAY WE DO. WE NEED TO BE THEIR STRENGTH IF WE EXPECT THEM TO "LIVE THEIR LIFE" TO IT'S FULLEST. THE MEDS ARE A PART OF THIS LIFE FOR THEM, BUT LOOK AT IT LIKE THIS, WE HAVE IT AVAILABLE TO USE WHEN YEARS PAST IT WAS JUST A THOUGHT IN SOME LAB. TAKE IT FROM ME, THE TOBI WILL HELP!! I HOPE I WAS ABLE TO HELP YOU!!KIM