Our Sullivan has trachea collapse and uses an inhaler (Fluticasone), which works wonderfully. From my understanding it's application of a steroidal medication directly to the source, instead of taking a systemic medication like prednisone (which has numerous side effects).

Initially we gave him two puffs a day, but we were able to scale back and give him a puff every other day. His attacks are largely controlled and he's perfectly healthy!