What will happen if I stop taking Propecia (Finasteride)?
You will not see any effects within the first few months (6 to 12 months according to the authors).
Unfortunately, it seems that, by doing so, you will lose all the benefits accumulated during the months or years of treatment. That is the reason why you should force yourself to take your treatment regularly.
For more details, see our page dedicated to Finasteride/Propecia.