Hi, I just found out that there was a Lantus forum too. I have started transitioning my cat from Caninsulin (4.5U) to Glargine (3U) yesterday. Should I be worried that this is a high dosage to start with? The vet suggested it based on her weight. I have posted a spreadsheet with both, Caninsulin and Glargine. Some guidance would be appreciated. I did read the yellow sticky note about the dosage but, if possible, I would appreciate some guidance. Thank you.