sounder27 Toby is short for the word tobramycin. Mayo's say they are having great results but that it takes a few months. They recommended (to me) 4 weeks on and 4 weeks off. Then repeat for several months. Windwalker on this site has used it successfully and I'm trying. It is an inhaled antibiotic that goes directly to the lungs and I believe one bacteria it targets is pseudomonas (which I have). They asked me to use a different dispensing cup from the one that usually comes on a nebulizer. This one breaks it down into a fine mist. I believe it is available (not costly) on Amazon and I'll get the name of it if you are interested. I told Mayo Doctor I had been on this two weeks and was still coughing and he assured me that we needed to stay longer. Two weeks would not take care of it. I just hope he's right. Perhaps Windwalker will come on and help you more with this product. I believe she said after using it she was cough free for a couple of years. Sounds like heaven to me. I believe tobramycin is an older antibiotic but the new way of getting it into your lungs seems to be what they feel is so important. I hope this is helpful to you in some way. Windwalker is also with Mayos (Florida) and I'm with them in Minnesota so I believe it is what they are recommending.