I went from Ultrase to Zenpep.
Never ever had stomach problems in my life and I actually only take 2 MT-20's with each meal which I hear is a really, really low dose.
Anyway, since I started Zenpep, my stomach hurts and I am generally messed up.
I called my CF center and they said that the Ultrase should be back on the market soon! It was supposedly going to happen this month, but my coordinator hadn't heard anything yet.