Testicle Pain from Propecia — It’s Rare, But Real

Hi there,

Great website, with lots of great information!

However in one of your responses to a question entitled “Problems from Fincar (Generic Finasteride)” you mention not being aware of testicle pain being associated with US Propecia.

I am not sure how it is in the US, but in the U.K., this (testicle pain) is listed as a possible side effect on the Merck product insert for propecia. It is also on their website and in the “prescribing information” document for propecia on Merck’s website.

I have looked this up and yes, testicular pain is a rare reported side effect. If you set up the relationship, try a half dose or just get off of the medication. From Merck.com’s site (info provided by Lexi-Comp), it states under “Adverse Reactions” for finasteride:

“<1%, postmarketing and/or case reports: Hypersensitivity (pruritus, rash, urticaria, swelling of face/lips); breast tenderness, breast enlargement, breast cancer (males), prostate cancer (high grade), testicular pain”

In other words, these symptoms were reported in less than 1% of men that used the medication. It does not indicated how much finasteride was being taken when these occured though (1mg Propecia or 5mg Proscar).

For more about finasteride, see Merck.com.