Scared me. Please check her levels this am.
I know we are only strangers on the internet, but it is not safe to give .5 units on a blood glucose level of 97. We suggest new diabetics not shoot under 200. She may have dropped very low overnight and that might be why she was so hungry. They feel their blood sugars low and instinctively want to eat to bring them up.
It also is not recommended to give ProZinc once daily. Cats metabolize insulin within 12 hours and need shots every 12 hours.
I am wondering what her levels will be this am. Either she will be low - meaning she had a very long cycle which indicates too high of a dose or she will be high (suggesting rebound) if she dropped very low overnight.
Rebound: Oddly, too much insulin may result in increase of blood glucose (BG). This "Somogyi effect" is often noted by pet owners who monitor their pets' blood glucose at home.
The reason: anytime the glucose level drops too far or too fast, the animal's organism may defensively dump glucose (converted from glycogen in the liver), as well as hormones epinephrine and cortisol, into the bloodstream. (If these are insufficient, hypoglycemia ensues!) The glycogen raises the blood glucose, the other two may make the pet insulin-resistant for a time. This phenomenon was first documented by a Dr. Michael Somogyi. [33]
Even when raising the insulin dose slowly and carefully, it's possible to pass the correct dose and go on to an overdose. (A typical case is increasing bidaily dosage from 1 unit to 2, passing a correct dose of 1.5 units.) This may produce a rebound—a swift jump in blood glucose up from a dangerously low reading, to beyond the previous pre-shot level. Always consult your veterinarian when changing your pet's insulin, and consider smaller dose changes.