There was a time, I want to say about a year ago, where my order from UP mysteriously disappeared and it took probably a month for it to arrive at my house. I was very suspicious, however, I have had no problems with their Proscar. After using it all, I ordered another batch about four months ago and nothing is really all that different.
It has to be legit, because for the week or so I waited for the order I was having ridiculously frequent erections. Now, I never considered myself as someone with a low libido, but I mean, it was becoming a nuisance. Everything was turning me on. When I began taking the pills again, everything went back to 'normal.'
I'd always recommend a prescription if you can get it, but from my experience I've had no issues. I'm sure with the numerous members on this website ordering from there, it would begin to be become evident if it was fake. Many on the success forum have used it, or are currently using it.
Also, I should add that I technically have use for Proscar because I have a difficulty urinating on occasion, and UP definitely helps this. Just another point of view here.