Gerard Butler has joined one of Hollywood's most famous clubs: rehab.

According to TMZ, the 42-year-old Scottish actor checked himself into the Betty Ford Center three weeks ago, after being addicted to prescription drugs.

The rehab visit comes some two months after Butler injured himself on the set of Of Men and Mavericks, a film based on the real life story of the late surfer Jay Moriarity.

At the time, Butler was pulled underwater off the north coast of California after being hit by giant waves.

TMZ reports that Butler's addiction to prescription drugs was retriggered following the Mavericks injury; his addiction actually stems back to 2006, when he was shooting the physically demanding 300.

In a 2007 interview with Men's Health, Butler revealed that he spent four months training for the role of King Leonidas.

I wanted to look really strong . . . I've seen so many actors play these kinds of roles, and you see all this equipment on either a big belly or skinny little arms, he told Men's Health.

You know that every bead of sweat falling off your head, every weight you've pumped -- the history of that is all in your eyes . . . I was standing there feeling like a lion, Butler added.

Butler is expected to check out of Betty Ford on Friday, TMZ reports.

Here are five other stars who have checked into rehab in recent months.

Gerard Butler
Though he's struggled with drugs, his rugged good looks and alluring screen presence are indisputable. Lopez famously avoids drugs and alcohol so the two would be a perfect match. REUTERS
How Much Can You Eat Before Your Stomach Explodes
How Much Can You Eat Before Your Stomach Explodes?
Brooke Mueller
Charlie Sheen’s ex-wife spent two months in rehab after a nasty episode in December involving drug dealing, assault, oh and that arrest.Just two weeks after reports that Mueller, 34, had plans to extend her rehab program by another 40 days, TMZ reported on Thursday that the mother of two has now been charged with felony possession of cocaine from December. REUTERS
Kim Richards
Kim Richards checked out of rehab in early January, nearly one month after treatment for alcohol abuse.The 47-year-old “Real Housewives of Beverly Hills” star is reportedly doing “really well,” her sister told People magazine. REUTERS
Eric Dane
The “Grey’s Anatomy” hunk checked into a rehab clinic in LA last July to treat an addiction to painkillers. Dane, 38, had been on the painkillers following a sports injury.The short visit did not affect his personal or professional life.“He reports back to work this week. Business as usual,” his rep said at the time. REUTERS
Matthew Perry
Matthew Perry Reuters
California Addiction California Addiction