"Brokeback Mountain" co-stars Anne Hathaway and Jake Gyllenhaal are in talks for roles in the film version of "Hard Sell: The Evolution of a Viagra Salesman."

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The Hollywood Reporter said the stars are in negotiations to reunite for the big-screen adaptation of the non-fiction book by Jamie Reidy, a sales representative for Pfizer in the late 1990s who penned his memoir about working in the pharmaceutical field.

Previously titled "Pharma," but now called "Love and Other Drugs," the film is to be directed by Ed Zwick. It will be about a salesman who, while on a business call, strikes up a relationship with a woman who suffers from Parkinson's disease, the entertainment industry trade newspaper said.