Pharmacology General f145bbd1 Clonidine is used as an antihypertensive agent but if used as a fast intravenous injection, it can increase the blood pressure due to: A Stimulation of vasomotor center B Release of noradrenaline from adrenergic nerve endings C Agonistic action on vascular α2 adrenergic receptors D Cardiac stimulation High-Yield Explanation No explanation provided.