By Jennifer Armstrong
Updated July 21, 2009 at 04:46 PM EDT

The Daily Show‘s Josh Gad will play Jake Gyllenhaal’s brother in Love and Other Drugs, according to The Hollywood Reporter. Ed Zwick is directing the film (originally titled Pharma), which also costars Anne Hathaway and is based on Jamie Reidy’s nonfiction book Hard Sell: The Evolution of a Viagra Salesman. It follows a pharmaceutical salesman in the competitive racket of male-enhancement drugs, who falls in love with a Parkinson’s patient played by Hathaway.