Fluoxetine is frequently used to treat major depressive disorder, obsessive-compulsive disorder, post-traumatic stress disorder, bulimia nervosa, panic disorder, premenstrual dysphoric disorder, and trichotillomania. It has also been used for cataplexy, obesity, and alcohol dependence, as well as binge eating disorder.luoxetine (also known by the trade names Prozac, and Sarafem, among others) is an antidepressant of the selective serotonin reuptake inhibitor (SSRI) class. Fluoxetine was discovered and developed by scientists from Eli Lilly and Company.