of patients. Vasodilation , atrial fibrillation , hot flashes , and hypotension have been reported frequently. Angina pectoris , postural hypotension , myocardial infarction , AV block (first degree), congestive heart failure , arteritis, bradycardia, peripheral vascular disease , supraventricular tachycardia , and deep vein thrombosis have been reported infrequently.