At 50 mg I dropped to 2 and couldn't get back up without increasing the dosage. (I started at about 65 and weekly worked my way down.) When we jumped to 75 mg I was in the 300's and had massively debilitating headaches, that kept me out of work. We started to experiment with a 75,75,50,75,75, 50 type of daily dosage but thought jumping to Nplate might work better for me. On Promacta I could tell when my count was below 50 because my headaches would go away! My body actually fells best when it is between 30 and 50, although I'm very lucky that other than the headaches, I really don't get side effects with any of these protocols. (Well, I gained 30 lbs on prednisone and will NEVER go back to that!)