Thank you for your responses. I am sorry you have had bad side effects with the meds which led to loss. I have not tolerated IV Tobra for years and tried Tobi twice with the same side effect: numbness. I have been on Cayston for two years, I am really hoping it is not from that. Waiting to hear back from clinic. I got adjusted at the chiropractor today, so hoping it will bring some relief. I' ll check out those other suggestions & website. And, yes we should read our labels and warnings on the bottle!! Thank you again.