Can finasteride stop hair loss?

How effective is finasteride at stopping hair loss? I am 19 and have a receding hairline but thankful I caught it early. Started finasteride and just wondering if it can stop hair loss all together

Stopping hair loss with finasteride depends a great deal on your genetics. Finasteride can’t always stop your patterned hair loss if it is very aggressive.  There is a high probability that finasteride will either slow, stop or reverse the hair loss.  When it slows it down, it is hard to see because there is nothing to compare it to; however, if you are on finasteride for a long time and then stop it, “catch-up hair loss” will show that it was working. I wouldn’t advise someone to do this because there is no guarantee that the ‘catch-up hair loss’ can be fully reversed.