SIDE/ADVERSE EFFECTS: CV: atrial fibrillation, hypertension, hypotension, vasodilation. Derm: ecchymoses. GI: diarrhea, nausea, anorexia, vomiting, weight gain (unusual). GU: frequent urination. Metab: hot flashes, weight loss. MS: arthritis, muscle cramps. Neuro: headache, abnormal dreams, depression, dizziness, drowsiness, fatigue, insomnia, syncope, sedation (unusual).