My Nuggs was 12.5 when a vet pushed me to give him heart guard plus for the 1st time. He was 12.5 but he ran and played like a 2 or 3 yr old dog. Within a week of his 1st dose of heart guard plus he started peeing him self if he got excited and then he started peeing while he was sleeping and he was drinking so much water so I took him to the vet and he was diagnosed with diabetes and his blood sugar level was in the 400’s that was august he was given the heart guard plus middle of july he was fully blind by Christmas. We couldn’t get his blood sugar regulated and he had to go out multiple times a night and then in November I was just about to give him his heart guard plus for the month and I realized that had to be it so I didnt give nuggs any more we had his blood sugar regulated in December. My poor baby is now 15 blind as can be and diabetic he has to get 2 shots of insulin every day all because of the heart guard plus I will never use it as long as I live.