Gerard Butler is in Rehab

Gerard Butler is at the Betty Ford Center for substance abuse, reports TMZ.

Apparently, training for the movie "300" led Butler to use pain medication.

Get well soon Gerard!

From TMZ:

Gerard Butler is being treated for substance abuse at the Betty Ford Center ... TMZ has learned.

Butler's problems were triggered by the physical demands of shooting "300" in 2006. We're told the actor began struggling with pain management, and the problem became exacerbated while filming "Of Men and Mavericks," when Butler was badly hurt on December 18 during a surfing accident.

We're told Butler realized he was relying too much on prescription drugs and decided to head off a full-blown addiction by entering Betty Ford three weeks ago.