"went on effexor aug 2015 through oct 2015, improved depression, however, did not really feel any joy either. effexor helped with diet, appetite declined, which i was happy with, as it allowed me to lose weight. effexor/venlafaxine did cause me to get angry, and acquire a bad temper on occasion. the primary problem i had with effexor/venlafaxine though was that it caused terrible constipation. no matter how good my diet was, it didn&#039;t matter. i ate steamed vegetables and fruit, with occasional lean meats, cut out junk food. i took psyllium every day, added miralax, and drank plenty of fluids. i had no choice but to come off the venlafaxine, bowel movements came back about 5-6 days later. i did have minor withdrawal with dizziness."