Docarpamine is an orally active dopamine prodrug that can be hydroxylated in the small intestine and liver to form active dopamine. Docarpamine mainly activates D1-like receptors in peripheral blood vessels to lower blood pressure and heart rate in a state of spontaneous hypertension. Docarpamine exerts a pressor and tachycardic effect by activating D1-like receptors, vasopressin V1 receptors, and alpha-adrenergic receptors in normal blood pressure conditions. Docarpamine can be used for research on renal vascular dilation and diuresis[1][2].