First of all, please move this if it is not in the right place. I did read the posts on this site before I joined, so I am aware of your discussions of the differences between Prozinc and Vetsulin. From what I can see, Vetsulin might be the less desireable of the two...so here is my question....well, basically that is the question. Stella is a 14 year old diabetic cat, somewhat neuropathetic in the rear legs, who has been very successfully treated with Prozinc for about 2 years. She will not eat any prescription diabetic food, so I do the best I can to give her decent quality food. She is indoor only, lives in a comfortable part of the house with access to a fountain and water dishes. She cannot get into a litterbox, but has lost 3 pounds over the course of her treatment. She and I have worked out a system whereby she uses a dog pee pad, then vacates it when it is soiled and I immediately replace it with a clean one. She has has some issues with bladder infections but they have always been treated. Today I called my vet to reorder Prozinc and was told that they no longer carry it and can only give me Vetsulin. Am I wrong in having freaked out....I don't mean that I lost control or called them names, but I instantly ran to Dr. Google and did some reading? I can afford Prozinc and I know that Chewy can get it;I have been very happy with their service with my Cushing's dog's meds and I assume that they can safely deliver the insulin. I am home most of the time so could be here to met the delivery. Keeping in mind that I did read your links and responses, as I don't want to waste time in having someone restate what was said, is the consensus that Prozinc is better and safer or am I freaking out for nothing? Thank you so much for your time and for establishing this group.