Evie,
Having taken both Imatinib and now on Nilotinib, I can say that in my experience the side effects with Imatinib were quite annoying and challenging at 400mg qd. Nilotinib has taken me to MR5 ‘but’, and I put that in quotes, Nilotinib definitely affects my heart. I can feel it like I felt the bone and muscle pain on Imatinib. I also developed hyperlipedemia. Personally, I am concerned about being on Nilotinib, but if I can achieve and maintain TFR or get down to a lower dose then for me it is worth it, for now…… Anyway in my case I plateaued on Imatinib so I really have no choice.
I can tell you my doc wanted to switch me to Nilotinib years before but I resisted due to my concerns over side effects. Finally, I would say that quality of life on Nilotinib is better but I also believe that the standard minimum dosage of 200mg bid should be looked at and perhaps lessened when applicable which in part may take pressure off the heart. At least that is what I am hoping for.
Good luck Evie.
JP