Mine has been a really annoying issue for quite a few years now. But my urologist suggested that Tadalafil Wikipedia page can be prescribed for BPH and appears to reduce the problems associated with BPH. Tadalafil is mainly marketed for erectile dysfunction as "Cialis", but depending on your urologist (and insurance if you have it), it can be useful.
Of course there are side-effects and interactions with other drugs, and I AM NOT A DOCTOR, nor do I play one on FreeRepublic, so this is only a suggestion that you confer with your urologist.
I used Cialis for my BPH for several years and it worked better than anything that I have used since.
My employer changed insurance companies and the new insurance would not cover it, so my doctor changed me over to a series of other medications hoping to find one that worked just as well as Cialis did. None ever have.
Whatever you do avoid ProScar, it has some hellacious side effects for a small portion of users. I was one unfortunately.