Back in the late 1970's through the early 1980's, Fleetwood Mac's Stevie Nicks was among the rock world's most notorious cocaine users. She was able to finally kick the habit in the late 80's, but was put on a tranquilizer called Klonopin to help cure the urges of a relapse, even though Nicks insisted she had no urge to return to those days. Unfortunately for Stevie, Klonopin is very addictive, and it almost killed her.

Nicks talked about the drug to Rolling Stone, explaining, "I went into rehab on December 12th, 1993 and came out on January 27th -- 47 days to come off Klonopin. I nearly died. And I think one of the reasons that Lindsey (Buckingham) left is because I was very, very high on this horrific tranquilizer. I didn't even make it to most of the recording sessions for Tango In The Night. I was sick. And I think he was horribly worried that I was going to die."

Fleetwood Mac is prepping for a North American tour this spring and summer.