what are the most common side effects of effexor xr?
['Unusual dreams.', 'Sexual problems.', 'Loss of appetite, constipation, diarrhea, nausea or vomiting, or dry mouth.', 'Feeling tired, fatigued, or overly sleepy.', 'Change in sleep habits, problems sleeping.', 'Yawning.', 'Tremor or shaking.', 'Dizziness, blurred vision.']