Brooke Mueller admits to abusing Adderall before hospitalization - report

Brooke Mueller is reportedly admitting to friends she was abusing Adderall leading up to her hospitalization for what was presumed to be a drug overdose.

Though Mueller initially denied using illegal drugs, TMZ reports Charlie Sheen's ex-wife revealed she was using the prescription drug to keep her awake to fulfill a taxing jewelry order.

Mueller is said to have told friends she has a valid prescription for the highly addictive drug, but says she "fell off the wagon" by taking far more of the pills than her doctor prescribed.

Brooke was rushed to the hospital when an assistant found her passed out and non-responsive. She was discharged after a short visit, and her rep issued a statement saying there was no drug overdose.