Judy Greer is joining Jake Gyllenhaal and Anne Hathaway in the Ed Zwick drama Love and Other Drugs for Fox, based on a novel by Jamie Reidy about a Viagra salesman.

According to Variety, Greer will play a pharmaceutical company trainee instructor. The script was written by Charles Randolph (The Interpreter).

Greer has also been tapped to co-star in Fox's Marmaduke, based on the comicstrip about a Great Dane. She'll play the mom of two kids who have a hard time controlling the dog.

Filming begins at the end of September.