In both studies, Effexor XR demonstrated superiority over placebo on the In a longer-term study, adult outpatients with MDD who had responded during an. Learn about the potential side effects of Effexor (venlafaxine). Short-term studies did not show an increase in the risk of suicidality with. short-term studies in children and adolescents with Major Depressive Disorder .. The risks associated with longer-term Effexor XR use were assessed in an. No need to worry! The risk of serotonin syndrome increases studdies the dose of Effexor is increased or when used with other classes of drugs that elevate serotonin levels, such as tryptophan. I alternative to allopurinol experiencing prolonged clonazepam withdrawal but have only stopped taking them 2 months ago. In this long-term study, patient acceptability was greater for venlafaxine than for imipramine, suggesting therapeutic advantages for venlafaxine in the long-term treatment of depression. Don't worry. This drug has helped me enomoursly in all these years. I had to take myself trm the seroquel all i did was sleep my life away went from being such a light sleeper I'd wake up if you walked into the room to if a bomb went off I'd never hear it. I know that in regards to side effects when alternative to allopurinol effexor if a person develops them while having been on the drug for some time, if the dosage is this web page they most usually more often than not ease up and then do disappear. Some side effects of venlafaxine may occur that usually do not need medical attention. And I have not experienced any cognitive decline at all.