High School Musical Star, Zac Efron, Was In Rehab For Cocaine!

Turns out that Zac Efron was not in rehab for an alcohol problem. He had a cocaine problem. He went to rehab back in April because of his major addiction. He would be a no show for a number of days on set. View the video from TMZ below. http://www.youtube.com/watch?v=14biXXYptTc