Demi Moore’s frantic 9-1-1 phone call has shed more light on the night she had a seizure and was rushed to the hospital, and it may have also revealed the substance that she was smoking.

As RadarOnline.com previously reported, a friend of Moore’s can be heard on the call explaining to the operator: “She smoked something, it’s not marijuana, it’s similar to incense. She seems to be having convulsions.”

A likely possibility is that Demi was smoking K2 Spice, a “currently legal herbal incense product spiked with powerful designer drugs” that don't show up in tests, according to WebMD.

Sarah Jessica Parker has signed on to replace Demi Moore in a new movie.

SJP will be appearing as feminist author and activist Gloria Steinem in Lovelace, the story of 1970s porn star Linda Lovelace.

The film has already started shooting, with Amanda Seyfried in the title role.

Demi Moore 911 Call: ‘She’s Convulsing’ And ‘She Smoked Something’

Getting the story of Lovelace, who died 10 years ago, to the screen has not been easy. Lindsay Lohan was at one time tied to another project about the infamous porn star.

Demi Moore was rushed to the hospital Monday night after a 911 caller from her home reported that she'd gone into "convulsions" after she "smoked something."

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That something, RadarOnline.com reported, is believed to be a synthetic drug called K2 Spice.

Moore has since been released from the hospital and has reportedly entered rehab.

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