Limitless(2011)

Aspiring author Eddie Morra is suffering from chronic writer's block, but his life changes instantly when an old friend introduces him to NZT, a revolutionary new pharmaceutical that allows him to tap his full potential. With every synapse crackling, Eddie can recall everything he has ever read, seen or heard, learn any language in a day, comprehend complex equations and beguile anyone he meets - as long as he keeps taking the untested drug. Soon Eddie takes Wall Street by storm, parlaying a small stake into millions. His accomplishments catch the eye of mega-mogul Carl Van Loon, who invites him to help broker the largest merger in corporate history. But they also bring Eddie to the attention of people willing to do anything to get their hands on his stash of NZT. With his life in jeopardy and the drug's brutal side effects taking their toll, Eddie dodges mysterious stalkers, a vicious gangster and an intense police investigation as he attempts to hang on to his dwindling supply long enough to outwit his enemies.