I have used a bunch of different combos. Was using the Minoxidil 15% + Azelic that I was buying online from Europe. It worked really well, but the group selling it was banned from distribution in the US....Huge bummer for me. I went back to the Kirkland 5% Minodixil. Also, just got 2,200 graft FUE about a month ago, so I had to go off of everything for about 45 days anyway.