I just wanted to post a quick update on my Cooper. We did the 60mg dose of vetoryl once a day and 30units of insulin twice a day for about 2 weeks because we were going on vacation and didn't want to push things with Cooper while we were gone. When we got back from vacation we did a glucose check and 6 hours after his morning insulin his blood sugar was in the upper 200s (which was the absolute lowest we'd seen but still not in the desired range). The vet said to start giving 60mg of vetoryl twice a day.
He wanted us to stay at that dose for 3 weeks then do an ACTH test. We're 2 weeks into it and I just rushed him to the vet. His teeth were chattering for a bit so I left a message with the vet to see if this was some indication that the insulin was too high. Cooper went and took a nap then woke up and his back legs were twitching and he walked into a wall.
I took him straight to the vet. His blood glucose reading was 169. But she said she's more worried about him getting an overdose of vetoryl and that it sounds like he's getting addisonoid (is that a word?). His electrolytes were very low so he's spending the afternoon at the vet getting fluids and when we pick him up we'll find out how we're going to adjust his dose.
I had never heard about the teeth chattering or muscle twitching, so I thought I'd post his update so more threads would show up if people were searching!