Actor Charlie Sheen's estranged wife, Broke Mueller, has decided to go to a rehabilitation centre in Mexico to get rid of her drug addiction.

Mueller is heading to a treatment facility in Cancun for an intensive seven-day stint in a bid to finally overcome her addiction, reports TMZ.

The 33-year-old, who has endured a long drug and alcohol abuse battle, finished her 45-day treatment program at a rehab centre in May this year.

Mueller and Sheen married in 2008, but split in April 2010 after the couple's drugs and lifestyle problems got in their way.