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Actress Lindsay Lohan was overcome by the heat on a movie set and required hospital treatment, her publicist told "The Insider" Wednesday.

The 20-year-old actress was taken by private car Tuesday to a Los Angeles area hospital where she spent several hours being treated for overheating and dehydration, spokeswoman Leslie Sloan Zelnick told the syndicated entertainment show.

Lohan was filming in 105-degree weather for 12 hours Tuesday, Zelnick said. The actress was given a vitamin B-12 shot and released.

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Zelnick said Lohan will return Thursday to the set of "Georgia Rule," which also stars Jane Fonda and Felicity Huffman.

Zelnick did not return telephone and e-mail messages from The Associated Press.

The star of "Freaky Friday" and "Herbie: Fully Loaded," Lohan was treated at hospitals twice in January -- in London for a cut on her leg and in the Miami area for an asthma attack.

In 2005, she was hospitalized for exhaustion and lost a noticeable amount of weight.

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