I Take Propecia, So I Can’t Donate Blood?

Hi Doctor,
I am a 25 yr old man, and when I noticed I was rapidly losing my hair, I scheduled an appointment with Dr. Bernstein, who put me on Propecia. I have been happy with the Propecia, as it has at least halted my hair loss with no side effects.

However, when I went to give blood today, I noticed that I was not allowed to, as Propecia was on the list of medications that would disallow me from giving blood. I was wondering if this will always be the case, i.e. as long as you are on Propecia you simply cannot give blood. This would actually be pretty devestating to me, since I have given blood at least once per year since college and I consider it one of the most meaningful and important things someone can do for society. And if I remain on Propecia for the rest of my life, would that for certain mean I wouldn’t be able to give blood for the rest of my life?

Thanks for taking the time to respond.

Yes, it is true that patients taking Propecia cannot donate blood for the very small risk that it may be given to a female patient who is pregnant. It is the same reason why Propecia is not approved for women (and especially so for pregnant women). It is unfortunate, but it is a choice of priority in the end. I commend you on your altruism.