Hi, my first blog. can anyone tell me how long it takes for cyclophosphamide to leave your system, I have been on a course of 10 infusions and finished on the 16th of December. It was to treat churg strauss syndrome which has left me with nerve damage to my left foot and right hand which seems to have got a little worse since treatment finished. From reading some of the post's on hear i appear to have got away quite lightly. Thanks. Tony.