I made a decision to take a break from Tobi for a while. I noticed my PFT's tend to drop and I get SOB. I know it kills the PA....but, man those symptoms make it hard to convince me that the benefits outweigh the risks. I have access to the Aztreanam Lysine so I do that for 4 weeks on and then take a break. My docs aren't real thrilled with Collistin though I may try to get that in the mix at some point. I feel GREAT taking a break from Tobi. I do PFT's next Friday after 4 weeks off and I anticipate they will be good "for me". I thought long and hard about taking a break from it and I feel really good about doing that at this point. I'll let you all know how PFT's go.