dosage
I have wondered the same thing..it was a good study, and although the results didn't appear to be exactly the same, the 0.20 mg dose appears to promote growth and retard male pattern baldness.
I thought it was odd that they didn't mention the side effects, if there was a noticeable difference. The way drugs work, it IS possible that a lower dose of something can decease side-effects while still providing the initial benefit of the drug...but I wouldn't take it as a given.
I am taking 0.25 and I have noticed a slight decrease in libido (which I have had before when NOT taking it). Interestingly, even at 33, I did, almost overnite, get a HUGE zit on my face !
The problem I see with finasteride, is: You have to take it a while to see if the effects go away (all this assuming you are getting the benefits as well, or why bother taking it at all, right?) But what if the effects are only moderate? I could live with a lower drive, but losing hardness is NOT good even if you are getting it once a year. Having three kids I don't care about ejaculate, etc.
So, we shall see. I am going to stick with this and see if I pull thru.