Dear Christopher Cat
The insulin my cat uses is being discontinued, so he will have to use a different type. My veterinarian recommends PZI insulin, but if I recall correctly, my cat did not do well on PZI when my last vet tried it. Do I have other options?
Eli Lilly and Company announced this summer that it is discontinuing several less popular insulin products.
Each type of insulin affects blood sugar differently, and each cat’s physiology is unique. So, as my brother Domino learned, sometimes it’s a challenge to match the individual cat with the most effective type of insulin.
PZI, protamine zinc insulin, is available from Idexx, which manufactures an FDA-approved product, and from several veterinary pharmacies that compound their own less expensive versions.
Most veterinarians prefer the Idexx PZI because the potency is consistent from vial to vial, which makes it easier to maintain diabetic control.
If your cat used a compounded PZI, try the Idexx PZI.
If your cat did not do well on Idexx PZI, ask your veterinarian about NPH or glargine, a relatively new type of human insulin that also is effective in cats.