@lavender – Hi from Tinkerbell – I was on prednisone for 11/2 years for GCA. Tapering can be a real problem and you do have to take it slowly. I read you should never go down more than 10% at a time. When I went from 20 mg. I tried to go 17.5 mg. That did not work and I had to go back to 20 mg for a few weeks. I then went down 1mg every two weeks until I got to 10 mg. Good Luck – I will be happy to answer any question.