I started taking 20 mg. (10 mg. with breakfast and 10 with dinner) daily in September. Later I cut it down to 15 mg. daily reducing the dinner dose to 5 mgs.. Still later I was able to cut it down to 12.5 by eliminating the dinner dose every other day. When I tried to reduce it to 10 mgs., I experienced pain and weakness in my right leg. I needed a cane to walk and did not dare to drive. Help me.