"among other diagnosis, i have major depression, and for the past 25  years have been prescribed many antidepressants.  previous to citalopram, i took an antidepressant that began to positively affect my frame of mind.  however, after a month of use, and increased doses prescribed by the dr., did not help.  with citalopram, after one month of miraculous mood improvement, i suddenly got dropped back to where i felt a month ago.  i have yet to see the physician to inform him."