Hi, I am soon to be 19 and I have always had a mild case of cf and never cultured pseudomonas until about one and a half years ago. I have been on alternate day prednisone as an anti-inflammatory for several years. After the postive culture came back with pseudomonas my doctor prescriped inhaled Tobi and Cipro. Well my body didnt tolerate either of those meds well. All the side effects that I had came on gradually but ended up that I had to discontinue the Cipro after 2 weeks and I stuck with the Tobi for a month but it caused me to lose my voice and also made me very short of breath!!!! Anyway after a month the culture came back again showing pseudomonas and so again my doctor had me take Tobi and the side effects were worse but I stuck with it for 6 weeks. Then after another culture still showed no change my doctor presribed inhaled Colistin and oral Levequin-hey no side effects! However, after three months of that treatment my culture still had pseudomonas. Then it was recommended that I go to the hospital for 2 weeks of IV Tobi and Mereopeum and also a Broncscopy(no pseudomonas cultured from that only mold). So anyway for six months my cultures were negative. Now I am culturing pseudomonas again and am waiting to hear what my doctor wants me to do. Does anyone have any advice?