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.

Click Here for the Lindsay Lohan Celebrity Center

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.

Click Here for the Lindsay Lohan Celebrity Center