It's likely one of the most frightening nights of Demi Moore's life.
At 10:45 p.m. Monday, Jan. 23, friends of the star frantically called 911 from her L.A. area home.
In the chilling, just-released audiotape of that 911 call, an unidentified female friend of the star tearfully tells a dispatcher, "We need an ambulance here as soon as possible."
Explains the caller, as several voices are heard in the background: "She smoked something. It's not marijuana…It's similar to incense. She seems to be having convulsions."
As the dispatcher continues to ask questions about Moore's condition, the caller confirms that Moore is "semi-conscious, barely [conscious]" and lying in an adjacent room.
When asked if Moore was breathing normally, the caller (who has moved to the next room to observe Moore) replies, "No, not so normal…[She's] shaking…burning up."
The unidentified woman adds that Moore "has been having some issues lately."
By the end of the call, a male caller gets on the phone and reports that Moore is "much calmer...she's breathing fine. She's leaning up and talking quietly."
Paramedics soon arrived and transported the 49-year-old (reeling from her late 2011 split from Ashton Kutcher) to a local hospital.
"Because of the stresses in her life right now, Demi has chosen to seek professional assistance to treat her exhaustion and improve her overall health," her rep explained the next day. "She looks forward to getting well and is grateful for the support of her family and friends."
Listen to the 911 call now.