My current hemotologist tells me he suspects I may be entering the "spent phase" of polycythermia vera.   I was diagnosed 3 years ago with PV and ET and have been taking anagrelide and aggrenox since then.   My counts are mainly normal now (e.g. hematocrit at 42 and platelets at 330k) except that my Hg is low at 12.9.  I am thinking that it may be time to d/c the anagrelide and change to hydrozyrurea.   I am also looking for ways to boost the longetivity of my bone marrow.

Summarized question: Should i start taking 'hydrozyrurea' for polycythemia vera?