Credit: SHOWTIME/Landov

So long Tara, Alice, Buck, Gimme, Shoshana and Chicken!

United States of Tara is being canceled after 3 seasons, Deadline reports. The comedy-drama featured actress Toni Collette, 38, and chronicled her character's struggle with dissociative identity disorder. Collette won an Emmy in 2009 for her portrayal of Tara, the wife and mother with a total of six individual personalities.

Tara declined in ratings during its third sesaon, and according to the site, only averaging 326,000 viewers in its Monday 10:30 p.m. slot.

Contrarily, Showtime has renewed the dark comedy series Nurse Jackie for a fourth season. Edie Falco, who plays the title character, won an Emmy in 2010 for Outstanding Lead Actress in a Comedy Series for her role on the show.