Insulins that work well with cats are Lantus, Levemir, PZI and Prozinc. Lantus and Levemir are human insulins you will get from your pharmacy. If your vet prescribes either of these, ask the prescription for the pens instead of the vial. With the vial, the insulin will become ineffective long before you can use it all. With the pens, because they are packaged in smaller containers, you should be able to use almost every drop. There are 5 pens in a package and depending on your dose, should last about 8 - 9 months or more. PZI and Prozinc are pet insulins you will get from your vet's office.
All of these are long acting insulins. You want to avoid insulins such as Vetsulin, Cannisulin and Humulin. These are short acting insulins and have steep drops in BG levels. These usually do not work well in cats. With any insulin, you want to start low and go slow. What this means, start at a low dose, such as 1 unit, and gradually over a period of weeks, increase it by very small increments. We recommend waiting at least one week between dose increase and only increase by 1/2 unit. The goal is to find the optimal dose that will keep the glucose levels under control. By learning to hometest, you will be able to determine how well your dose is working.
If you have more than one cat, a low carb/high protein canned food diet would be beneficial to all of them. By keeping all cats on the same diet, it makes it easier to manage Johnny's diabetes and also reduces the risks of any of the other cats from developing FD.
It is overwhelming right now, but don't worry, we can help walk you through this dance.
