Have questions regarding Insulin. My vet originally thought my cat had a kidney problem. Drew labs and got the results the next day. Another vet at the facility discussed the lab results with me by phone. She said she considered my cat to be in a pre-diabetic stage and said she did not think my cat would need insulin but rather his hyperglycemia could be managed through diet. She said make an appointment for the next day to discuss this. I made the appointment and came to the vet’s office only to find another vet there. This office only has one vet at a time there apparently. So this vet tells me that my cat has most assuredly diabetes and will be on insulin the rest of his life and proceeded to tell me he has to be given 2 shots per day of the insulin, that he can only be fed twice a day then the insulin given right after eating. She tells me he has to have a special diet (Royal Canin glycobalance) and the insulin she prescribed was ProZinc Insulin 40 units per ml, 10 ml vial plus the syringes. She told me expect to pay $150.00 per month for the insulin and syringes. My head is spinning. My character of a cat is 13 years old. I love him very much. However I have 2 daughters I am putting trough college, single income family, all our vehicles have over 200,000 miles on them and we can’t afford a new car as we can’t afford making payments. I have done a little research on this and am wondering why I can’t use a less expensive insulin such as Vetsulin. Also I have read about others that have diabetic cats and they give them NPH with good control. These are a lot less expensive. Can anyone give me advice, info, reasons why I should not use these other insulin’s and whatever experience you have for me to help me as a I am new to all of this. Thank you.