http://www.medications.com/effect/view/27801 I was put on 40mg per day of Prednisone for a sinus infection. I felt good for 4 days, then very weak and tired with headache and nausea. The doctor did not prescribe tapering off, just stop after 10 days. I quit after 9 days. Horrible withdrawal, very Fri, 21 Mar 2008 22:27:01 -0400 http://www.medications.com/effect/view/27801?item=5727 har1ey, it is dangerous to stop Prednisone suddenly -if your taking it for more than 5 days you should be tapered off "Do not stop taking prednisone without talking to your doctor. If you suddenly stop taking prednisone, your body may not have enough natu http://www.medications.com/effect/view/27801?item=5727