Limitless is a 2011 American mystery thriller film directed by Neil Burger and starring Bradley Cooper, Abbie Cornish, and Robert De Niro. It is based on the 2001 novel The Dark Fields by Alan Glynn with the screenplay by Leslie Dixon.
Eddie Morra (Bradley Cooper), an author suffering from writer's block, living in New York, is stressed by an approaching deadline. His girlfriend Lindy (Abbie Cornish), frustrated with his lack of progress and financial dependence, breaks up with him. Later, Eddie meets Vernon Gant (Johnny Whitworth), his ex-wife's brother. Vernon gives Eddie a nootropic drug, NZT-48. After taking the pill, Eddie finds himself able to learn faster and recall memories from his distant past.