The dose sounds high to me also. My dog sligtly smaller than yours was put on pred. for a chronic condition. We were told to give him 40mg once a day. I am weigh a lilttle more than your dog I don't know how much diffrence there is between a person and a dog but I had to take 50mg once a day.
It's on Page 4 of this forum...Titled: "Adverse Effects in Dog After Pred." Read this and see what you think......Karla
Sound unusually HIGH to me, too. My niece's Great Dane (110lbs.) took the pred. for inflammation and her dose was 50mg. 2@day. My Bichon has taken it for a skin disorder and the most she was given was 5mg. 2@day. There was a discussion about this a couple of weeks ago. Let me see if I can find the thread and I'll direct you to it before you decide....Be back...Karla