So i've been on finasteride for about 6 months now. I first took about 1mg/day, and has quite some decreased libido, and couldn't get a full erection. After about a month, I decided to lower the dosage to 0.650mg. Situation is okay really, I can get it up, but not rock hard like i used to, and that's quite frustrating really. So here's the question: I've heard finasteride works juste as well on 0.2mg/day. Should I try lowering the dosage that much, or is 0.650mg the minimum required?