I know Peg in PA was on Faslodex but not sure about the Ibrance. It is suppose to work better when you take both at the same time. I see if I can find any info on the combo for you. I beg your pardon on the previous answer I posted this evening. I'm current not in a very good place. My chemo is making me very ill daily and I get another round tomorrow. I am sorry for taking it out on you.