Elise T. Are you familiar with the FB page AnimalEO? If not, please check it out and request an invitation to join. That is Dr. Shelton’s essential oils site and you would be better served asking the question there as she and her tech staff are familiar with what EOs may or may not work. I use quite a number of essential oils but, I’m sorry, I’m not familiar with any that would help with a diabetic dog. Check out their FB page.