LOS ANGELES —  Colin Farrell is being treated for exhaustion and dependency on prescription medication, his publicist said.

The medication was prescribed to the Irish actor after a back injury, publicist Danica Smith said in a written statement Monday.

The statement said Farrell had checked himself into a treatment center, which wasn't identified.

"No other comments (are) to be made at this time," the statement said.

Farrell, 29, stars in the upcoming adventure-drama "The New World." His screen credits also include roles in last year's "Alexander" and the 2002 thriller "Phone Booth."