Fluoxetine hydrochloride. Molecular model of the drug fluoxetine hydrochloride (C17.H18.F3.N.O?H.Cl). This antidepressant is sold under the brand name of Prozac. It is used to treat major depressive disorder, obsessive-compulsive disorder (OCD), post-traumatic stress disorder (PTSD), bulimia nervosa, panic disorder, premenstrual dysphoric disorder, and trichotillomania. Atoms are represented as spheres and are colour-coded: carbon (grey), hydrogen (white), nitrogen (dark blue), oxygen (red), fluorine (light blue) and chlorine (green).