Hello @dchavian, welcome to Connect. I invite you to look at the following discussion in addition to your discussion, https://connect.mayoclinic.org/discussion/mds/. @jaylevel1 talks about being on vidaza as well and a few other members talk about MDS. As far as the length of which you can be on vidaza, unfortunately, such a specific question would be best answered by your medical provider. Is that a question you have asked your provider? You mentioned you don't have many symptoms currently, which is great. Other than your question in regards to how long you can be on Vidaza, do you have any other questions or concerns you'd like to ask members on Connect?