Apparently, Real Housewives of Beverly Hills' Brandi Glanville's ex-husband Eddie Cibrian was losing his hair  but that's not all he lost.

Radar Online is revealing a new excerpt from Brandi's upcoming book, Drinking and Tweeting, in which Brandi describes an unfortunate side effect to Eddie's hair-loss medication. 

“Eddie had started taking Propecia, like many men, because he was concerned about hair loss,” Brandi writes. “He had fantastic hair, but who was I to sideline his vanity?”

But Propecia had a pretty big downside, as it apparently made him impotent.

“This particular drug had nasty side effects — including ones that happened in the bedroom," she reveals.

full size Eddie Cibrian Cheers Paparazzi on September 8, 2011

“I knew he was concerned about his hairline, but momma needed something h**d," Brandi shockingly continues. "I was not down for a limp d**k and gave him an ultimatum: It was the Propecia or me!” Wow. Just wow.

Eddie responded by insulting her lady parts in a "vulgar" way, which apparently led to Brandi eventually getting vaginal rejuvenation surgery on his dime.

So if you were worried that Brandi's love life wouldn't have enough juicy details to full a whole book, fear not.

In fact, we almost want to erect a statue in Brandi's honor to thank her for all these wild stories. (Get it — "erect"?)

Source: Radar Online