Actress Demi Moore arrives for the 82nd Academy Awards ceremony...

Actress Demi Moore arrives for the 82nd Credit: Getty ImagesAcademy Awards ceremony held Sunday at Kodak Theatre in Hollywood. (March 7, 2010)

Demi Moore has dropped out of the Linda Lovelace film biography "Lovelace," in which she had a cameo role as feminist Gloria Steinem, her representative told CNN Wednesday.

Moore, 49, was being treated for exhaustion and other health concerns after an emergency room visit Monday night.

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Demi Moore has dropped out of the Linda Lovelace film biography "Lovelace," in which she had a cameo role as feminist Gloria Steinem, her representative told CNN Wednesday.

Moore, 49, was being treated for exhaustion and other health concerns after an emergency room visit Monday night.

The actress' spokeswoman did not comment on Wednesday's report by TMZ.com that Moore had an adverse reaction to a "whip-it," the colloquial term for a nitrous oxide inhalant used as a recreational drug.

Meanwhile, during this health scare, Moore's estranged husband, Ashton Kutcher, was seen partying in Brazil, where he is shooting a fashion campaign and attending Sao Paulo Fashion Week.