I have had very bad sinus pain for four weeks, went on two antibiotics and it is still there. Went to see the ENT and he told me to go on prednisone - 6 days. There was some confusion at the pharmacy - 20mg 2x/day or 40mg 1x/day, for three day and the 20mg 1x/day for three days. It is now night so I cannot call my doctor. What is the normal dose for Prednisone?