time period for propecia?

[ACT10Npack]

I would like to know whats the time period of propecia working? I know Merck release that it works after 5 years but what about 10 years. Proscar was around that long. They're must be some data out there that we can see.

 

[Slartibartfast]

It doesn't stop working. Whether you've taken finasteride for 5, 10 or 20 years it will still inhibit the same percentage of the 5a-reductaze enzyme. It's just that this may no longer give a sufficient level of DHT reduction as hair loss is a progressive "disease".

Slarti