Brooke Mueller has been rushed to hospital after a suspected overdose.
The former wife of Charlie Sheen - who has twins Bob and Max, three, with the Anger Management star - was reportedly taken from her home in Tarzana, Los Angeles to a nearby hospital on Friday morning.
According to gossip website TMZ, Brooke is now "conscious and responsive" but those around her are "deeply concerned" as they claim she has been taking drugs for the past few weeks.
In June, Charlie urged Brooke to check herself into rehab after he became concerned about her.
Brooke - who has struggled with substance abuse issues in the past - reportedly appeared "out of it" when she paid a visit to her ex-husband.