Anybody out there on Sprycel (dasatinib)? I was on Gleevec approximately 7-months. After seeing a 2nd opinion doc and having a 2nd bone marrow test, I was told the Gleevec was not doing what it was suppose to be doing. Therefore, I was put on Sprycel. Side effects for me are headaches every morning and fatigue, but the biggest problem is my platelets dropping significantly. I was put on 100 mg of Sprycel and they dropped, in 4-weeks to 49,000. Furthermore, my whites dropped to 3.8 in the 4-weeks time. I'm now on 50mg's. I was wondering if anyone else is going or has gone thru the same thing? Thanks for any input.