constipation, nausea, anorexia, weight changes, vomiting, hypertension palpitation, vasodilation, changes in serum cholesterol, chills, yawning, dizziness, dry mouth, insomnia, nervousness, drowsiness, asthenia, headache, abnormal dreams, anxiety, confusion, hypertonia, sensory disturbances, tremor, difficulty with micturition, sexual dysfunction, menstrual disturbances, visual disturbances, mydriasis.