Citalopram
"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."