Brooke Mueller is back in rehab . . . again.

Charlie Sheen's third ex-wife (and mother of his twin sons, Bob and Max, 3) has sought treatment for the 19th time, according to TMZ. Mueller, 35, is reportedly addicted to Adderall, a psycho-stimulant commonly used for attention defect disorder (ADD).

"Brooke was uncomfortable with the way Adderall was making her behave," Mueller's attorney, Yale Galanter, told the site.

Mueller reportedly overdosed on the prescription pills last week. According to Galanter, his client had no illegal drugs in her system when she was admitted to the hospital. (On Dec. 7, Mueller's rep told Us Weekly she received medical attention as a precaution: "She was diagnosed with exhaustion and dehydration and is now fine and resting at home. That's it.")

Speaking on Mueller's behalf, Galanter told TMZ, "Brooke continues her lifelong battle with drug addiction by taking these steps herself to prevent a further drug relapse."

Mueller most recently sought treatment over the summer. She also underwent a 90-day treatment program in early 2012, following her December 2011 drug arrest in Aspen, Colo.

This article originally appeared on Usmagazine.com: Brooke Mueller Enters Rehab for 19th Time for Adderall Addiction