You could try Anagrelide. It reduces platelets. If it is iexpensive on your insurance check Goodrx.com. You can get it fir about $48.00 a month at pharmacies. My doctor even has flyers on this at his office. When you check for price click down to see price at different locations, Then print the coupon.
Best wishes, Eileen

Joni, do look into financial aide from the interferon producer itself. I could not justify the enormous expense of Besremi as it would quickly gouge out my retirement savings. Even Medicare with plan D would be a dreadful cost though maybe this will change as the IRA rules start to take affect for Medicare drug plans in the next few years.) I applied and have at least been approved for the first three months. (They've implied I have to do some other application in January, which I dread.) The application process looked easy at first but actually was filled with frustrating pauses and roadblocks. It took months to adequately meet all the requirements of the body that makes the decision. Still, what an enormous help free treatment is. (During the process I suggested they do more of a prorated discount, which seems more fair, but the pharmaceutical rep said no, it's all or nothing financial aide.)