'Limitless' tops box office with $19M

3/20/2011
ASSOCIATED PRESS

LOS ANGELES — There was no stopping "Limitless" at the box office.

The sci-fi thriller opened at No. 1 this weekend with $19 million, according to studio estimates Sunday.

The film from Relativity Media stars Bradley Cooper as a struggling writer who takes a magical pill that allows him to tap into his maximum brain potential. Suddenly he's cleaned up, making millions and wowing everyone he meets.

Robert De Niro co-stars as a financial guru who's fascinated by him, with Abbie Cornish as Cooper's skeptical girlfriend.