Husbands taking Propecia?

Mandy
My husband and I are thinking about TTC very soon, but he is on several medications, including Propecia (for hair loss).  I've read mixed opinions on whether or not this safe, as it may affect the development of a male fetus.  Have any of you ladies conceived while your husband was on Propecia?  Or have you done any research on this?  Thank you in advance!!