Jackie Peyton is the title character in Nurse Jackie. She's played by award-winning actress Edie Falco.
Jackie is an ER nurse in New York City. She does everything she can to provide the best care possible for her patients. This character tries as hard as she can, everyday, to make sense of the chaos and level the medical playing field whenever she can.
Of course, Jackie can't do this alone. She needs a daily diet of prescription pain medication to get her through.