You may slightly notice if hair loss has stopped or slowed down. The drug will be having an impact. The only way to find out what is happening is to stop the drug, and if you do, you may shed a great deal of hair that may not return. Therefore, stopping Finasteride may not be a good idea. This is a difficult place to be, but you almost always must stay on the drug, and in up to two years, you will almost certainly get value from it.