I have tried minoxidil 5% for about 2 weeks and I am it seems that I cant use it twice a day as you should. My scalp itches bad, but I can handle it. The problem is that I get chest pains and it doesnt feel good at all to use minoxidil knowing it causes pain in the chest area. Anyway I am thinking of using it just once a day or maybe on the hairline only. Could this be effective or just a waste of time? I am also using propecia, nizarol, and tricomin.