I was on Prednisone for 4 1/2 months. Sometimes daily dosage took me as high as 120 mgs. I took it for treatment of Clusters. I suffer them every four yrs. For anywhere from 60 days to 6 months plus. This year I swear I've gotten neuropathy as a extreme side effect. I was also on a regiment of verpamil 285 mgs for 34 days but stopped abruptly cause of side effects.