查来的：利血平的降压作用是通过消耗外周交感神经末梢的儿茶酚胺而发挥药效

The antihypertensive actions of reserpine are a result of its ability to deplete catecholamines (among other monoamine neurotransmitters) from peripheral sympathetic nerve endings. These substances are normally involved in controlling heart rate, force of cardiac contraction and peripheral vascular resistance.