Buy Celexa online for the improvement of your energy level and feelings of well-being. Celexa is the brand name for a generic drug called Citalopram. It is sold in the U.S. market. Celexa is a group of drugs called selective serotonin reuptake inhibitors (SSRIs). It is a prescription medicine used to treat major depressive disorder, anxiety and panic disorder, Psychosis, and Depressive Features.