There was no stopping "Limitless" at the box office.
The sci-fi thriller opened at No. 1 this weekend with $19 million, The Associated Press reports.
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, and Abbie Cornish is Cooper's skeptical girlfriend.
Kyle Davies, Relativity's president of theatrical distribution, said he thinks "Limitless" stood out through a combination of its marketing message and good word of mouth.
"This was a thriller but a very different kind of thriller," he said. "It was a unique angle on a traditional genre."