I agree with with the post above, I wouldn't worry about coming off of the drug if you are not experiencing any side effects. I was on propecia for about 5 years and recently had to stop the drug due to side effects.

I have been off of of propecia for about six months now and can honestly say that I have not noticed a huge difference in hair loss in that time. Most published reports state that you will most likely revert back to where you were before you started taking the drug within 6 to 12 months after quitting.

But again I would say if it aint broke don't fix it... I would have never stopped if I didn't experience any sides.