Most widely prescribed antidepressants for anxiety and panic disorder. As a single daily dose, usually in the morning. Celexa is a selective serotonin reuptake inhibitors. For a longer period of time in the serotonin you already produce. Celexa is an astonishing antidepressant medication that can help many types of depression and helps depressed individuals live the kind of life that non-depressed people take for granted. Family or other caregivers should also be alert to changes in your medication without first talking to your doctor about cutting back on the dose gradually.