Among the antidepressants, note that trazodone (Desyrel) causes severe drowsiness that paroxetine (Deroxat, Paxil) and mirtazapine (Remeron) are known to promote the kilos that venlafaxine (Effexor) causes nausea and sertraline (Zoloft) frequently causes diarrhea.

In short, the recommendations of the American College of Physicians essentially as doctors opt for a new medication if the condition of the treated individual does not change within 6 to 8 weeks and monitor frequent medical patients on a regular basis, especially during the first months of treatment, to avoid the risk of suicide.

Doctors must also continue treating patients who are depressed first period of 5 to 9 months after improvements of the state have been noted, while for those who live longer, make the treatment last longer.