Medicine and Pesah

Question

I was surprised that your father in his sefer doesn't quote Hazon Ish, Orah Hayyi 115:8 that medicine that has hametz, if it's not rauy le-akhilat adam is not forbidden. He explains that even though some say that even if it's rauy le-akhilat kelev you shouldn't eat it le-khathilah, but Hazon Ish explains that when it is mixed with something else then it is always permissible