Has anybody gotten heart palpitations from Imuran or 6mp? I don’t think its supposed to be a side effect. I upped my dose of Imuran by a another 25mg last week and the past few nights I’ve had heart palpitations that actually seem to keep me awake at night. I’ve been on 15mg of Prednisone for about the past month now so I’m not sure why all of a sudden the Prednisone would be causing it. I know in the past I’ve gotten this from Prednisone but usually at a higher dose or when I’m tapering.