Hello! I'm sorry to hear about your asthmatic kitty. Tarragon has had asthma for 11 years and diabetes for 6 years. We use the aerokat inhaler mentioned above with flovent 220 (2 puffs twice a day) and abuterol for rescue inhaler. Tarragon's asthma is bad and the inhaler was not able to keep it controlled alone so he is also on 10 mg of prednisolone each day for the last 4 years. We have always used the approach that breathing comes first so we have adjusted his insulin to compensate for the pred. When T first went on prednisolone, we used the approach of increasing his insulin by .25 U every 3 days that he was not under 200 until we found the right dose. He is well regulated now and breathing easy. Let me know if you have any questions or need anything!