Can Propecia Regrowth Come in Cycles?

First off, thanks doctor for all the help you have given. Your site is very helpful.

I actually have a one question and also a comment about propecia.

Firstly, I have been experiencing balding at my hairline for about a year and a half. It hasn’t gotten too bad yet and is moving quite slowly. I started on propecia about 6 months ago and have recently seen a slowing in the shedding of my hairline. Also I have seen a slight thickening in the hair in right at the hairline. The hairs that are growing are small and kind of thin though, so I was wondering if hair regrowth with propecia can come in cycles. Will it start as smaller miniaturized hairs, then the next cycle will they be thicker? Just wondering if this was common for the drug in your experiences.

My second comment was on the side effects of the drug. About a month after I started I noticed drastic sexual side effects. My sex drive was still there, but I could not sustain an erection. I cut back to half a pill a day and that helped at first, but once again I fell into that same situation. Recently though I’ve notice just as drastic of an improvement though. It almost seems over night the sexual side effects went away. I have even gone back to a whole pill and have no noticeable side effects. Is it normal for the side effects to go away so suddenly? Also, could such strong side effects mean that the pill is working well on me? Not that I’m complaining, just interested to know. I am glad I stuck it out though, seems it just took time for my body to adjust.

Thanks for everything in advance!

Many people who get a decreased libido can work it out the way you did. Hair loss comes in cycles, but Propecia (finasteride 1mg) does not work in that fashion. At times, you may find the hair loss will occur even when you are on the drug, and that hair loss occurs in bursts. The focus here was on libido and hopefully your libido problem has been solved. With regard to other side effects, they tend to occur and stay around while you are on the drug, like decreased volume of your ejaculate after orgasm or breast tenderness. Of course, breast pain could be brought on by other causes as well (even breast lumps, although very rarely from Propecia), so if you get them you should see your doctor.