Is penis shrinkage real?

I just wanted to ask if it is true that finasteride can cause penile shrinkage? My girl friend has been complaining that my hog is too large and I was wondering if taking it might at least diminish the girth.

I have a problem with this claim. You know when you are not sexually excited, you go swimming, you are out in the cold, the penis often smallest shrinks down.  Try going for a a swim you you will see that it shrinks.  Worrying about it I am sure doesn’t help. I don’t believe that having a large penis is an indication for taking finasteride which I don’t believe shrinks the penis.