I was on it for about a month and a half. Then I quit due to libido loss. I stayed off for a little over a month. My sex drive came back, at least most of it. I guess I started thinking maybe I didn't give it long enough, and couldn't stand looking at my hairline anymore, so I started again a little over two weeks ago. The sides came back right away. Origianlly, they took a couple weeks to develop. I still have them. I'm trying to determine a new dose and how often.