I just need to clarify this because its a pet peeve of mine. TobRA is the iv form & ToBI is the inhaled....
That being said if I am having an exacerbation I go on iv tobra even tho I am prescribed to use tobi as part of my inhaled regimen.
Usually when I am at the point of needing iv's, I need a cocktail so the inhaled would only do so much since its only one of the 2/3 meds I get via IV.
I have been colonized since my diagnosis so I dont know anything different. Tobra works well for me & KNOCK ON WOOD....I havent had any issues yet, but they monitor me closely because I have used it for years & years!