What is the best dose for finasteride?

Too many young men want to prescribe their own dose to avoid the 2-4% risks of sexual side effects.  That may not make sense.  When Merck did the original study for the best dose of finasteride across a huge group of men, they found that the 1mg daily dose was the most effective dose. Higher doses didn’t effect the balding more than the 1mg dose, Lower doses, were less effective with a half dose at about 80% as effective as the 1 mg dose. In their data, the .25 mg dose was only 50% as effective as the 1 mg dose. So when I prescribe it, I prescribe the 1mg daily dose.