Hi Sue,
Please watch him extra close for any sign the cortisol is dropping too low. This increase is not in compliance with the very specific protocol for this drug and puts the dog at higher risk (info found in the drug insert we always hope the vets will read). If you see any of those signs listed above or any changes for the negative, please have another ACTH done asap if at all possible. I understand you don't have much, if any, say in his care but try to convince them of the seriousness of the situation should it occur. Most of the time simply stopping the drug for a few days until signs of high cortisol come back are enough but not always. IF Hendrix should respond negatively to this increase, make sure they do not put him back on the increased dose when he restarts. He needs to be on a lower, not higher, dose if he does react badly. I hope that doesn't happen and he continues to show improvements!
Hugs,
Leslie