According to the 911 call tape from last Monday, Demi Moore suffered convulsions after smoking an undisclosed substance.
In the recoding of the emergency call, which was released by Los Angeles fire officials, Demi Moore is described as “semi-conscious, barely”.
The tape captures the few minutes it took paramedics to arrive as friends gathered round the collapsed star.
In the emergency call, a woman is asked by operators: “Is she [Demi Moore] breathing normal?”
“No, not so normal,” the woman says.
“More kind of shaking, convulsing, burning up.”
When the dispatcher asks if Demi Moore has ingested or smoked any substance, the woman replies: “She smoked something. It’s not marijuana but it is similar to incense.”
But the full answer was redacted on the advice of the city attorney’s office, citing federal medical privacy rules.
“She’s been having some issues lately with some other stuff,” says the woman.
Asked by the operator if this has happened before, the female voice says: “There’s been some stuff recently that we’re all just finding out.”
When asked by the operator if the apparent overdose was accidental or intentional, the caller said: “Well, she smoked something but the reaction was accidental.”
A second woman gets on the phone and says: “She’s shaking, convulsing, burning up. I’m taking cold water and putting it on her back because she’s burning up.”
At one point, the woman can be heard saying: “Demi, can you hear me? Yes, she’s squeezing my hand. She can’t speak. She’s convulsing so we’re holding her down.”
By the end of the call, a male caller takes the phone and says Demi Moore is “much calmer…she’s breathing fine. She’s leaning up and talking quietly.”
Demi Moore’s eldest daughter Rumer is believed to have been by the actress’ side at the time of her dramatic collapse.
During the 911 recording, a male caller appears use the 23-year-old’s nickname.
The man is heard saying: “Hey, Ru, what’s the name at the gate so that we can buzz them [the paramedics] in from here?”
Demi Moore has two other daughters, Scout, 20, and Tallulah, 17, from her marriage to Bruce Willis.
Radar Online speculates Demi Moore may have been smoking K2 or Spice, which is a legal herbal and chemical product that mimics the effects of cannabis.
The actress had also inhaled laughing gas, also known as “whip-its”, is has been claimed in US reports.
Demi Moore’s publicist has previously said the actress suffered from exhaustion.
It has now been claimed Demi Moore – who is reported to be receiving treatment for eating disorder anorexia – had replaced food with caffeine-based energy drink Red Bull.
A friend of the star told The Sun newspaper: “Demi avoids alcohol and instead drinks tons of Red Bull when she goes out. But in recent months she’s not been eating much, so she’s also been drinking it in the day to give her energy to get through.”
Demi Moore- who was reportedly released from California’s Sherman Oaks Hospital last night – “seemed drunk” when she was admitted to the medical facility on Monday, but it is thought it was just because of the vast quantities of Red Bull she had consumed.
The pal added: “She seemed drunk but I don’t think any alcohol passed her lips, just loads of Red Bull. It’s not a healthy way to live.”
Demi Moore left hospital yesterday and is understood to be recovering at home.
Her split from actor Ashton Kutcher, whom she married in 2005, followed allegations of his infidelity.
Demi Moore was formerly married to actor Bruce Willis, with whom she had three daughters Rumer, Scout and Tallulah Belle.