Name-brand Propecia versus finasteride

[titaniumtorpedo]

What is the truth about the name-brand finasteride (Propecia) versus the much-cheaper generic finasteride? Some say they didn't get results from the generic, they switched to name-brand, and then they get results. But it takes a while for finasteride to kick in. So maybe they just think it's the brand.

Are they chemically the same, as we're told about generics? Or should we pay the much-higher price?