All the studies i have read states that any amount over 1mg is a waste as far as hairloss.
But, i have also heard that dutasteride in initial studies has shown 35% more effective than finasteride.
I order mine from http://www.4rx.net , its cheap and no prescription is needed.
enjoy
I used finasteride and I noticed a minimal amount of growth, and I can tell you that rogaine doesn't work. You should try scalpmed, although it's from the infomercial, the results look really promising. Go to their website and check it out.