Brooke Mueller - the ex-wife of Charlie Sheen - continues to battle her drug problem with another stint in rehab. She's attended rehab in the past, reportedly related to a crack-cocaine addiction, and this represents the 19th time Mueller has tried to seek professional help for her issues with drugs.

The news, according to E! comes soon after Mueller was taken to a nearby emergency room on Friday, Dec. 7, after an ambulance was called to her Tarzana residence. Mueller's rep insisted the situation was not a dire one, saying, "An assistant thought Brooke was nonresponsive while she was napping and hastily called an ambulance," rep Steve Honig said in a statement at the time. "As a precaution, Brooke was brought to a local hospital and discharged after an hour. She was diagnosed with exhaustion and dehydration and is now fine and resting at home. That's it." A friend of hers also added that "She's been in a good place," saying, "She hasn't seemed depressed or low at all. She's excited about the future, spending time with her children and just wants to get on with her life peacefully."

Mueller underwent a 90-day treatment program in early 2012 after she was charged for assaulting a woman last December in a Colorado nightclub and possessing four grams of cocaine. She is currently on probation and most recently sought treatment over the summer.