Jonah Hill
Filming began on August 8, 2012, in New York City. Jonah Hill announced on Twitter that his first day of shooting was September 4, 2012. Filming also took place in Closter, New Jersey, and Harrison, New York. Vitamin D powder was used as the fake substance for cocaine in the film; Jonah Hill was hospitalized with bronchitis due to snorting large quantities over the course of filming.