Limitless is a 2011 American thriller film directed by Neil Burger. Based on the novel The Dark Fields by Alan Glynn, the film starsBradley Cooper, Abbie Cornish, and Robert De Niro. The events portrayed in the film follow Edward Morra, a struggling writer, who is introduced to a nootropic drug called NZT-48, which gives him the ability to fully utilize his brain and vastly improve his lifestyle.Limitless was released on March 18, 2011, and became a box office success after grossing over $161 million on a budget of $27 million. A television series of the same name covering events that take place after the film debuted on September 22, 2015.The film opened at number one in its first week in the US. The film did well at the box office, earning some $79 million in the U.S. and Canada as well as some $157 million worldwide against its $27 million budget.