WIC formula

I'm in PA and idk how different each state is with WIC and formula but we just tried the similac spit up for my daughter to help with reflux and it seems to be working; I know if you get a note from dr saying they need a special formula you have to give it to WIC, I'm just wondering if anyone uses special formula and what kind? I was told the sensitive they covered with dr note before I even received the advanced.