Oxymetazoline hydrochloride

Oxymetazoline hydrochloride is an α1 and α2 adrenergic receptor agonist. It is available over-the-counter as a topical decongestant in nasal sprays. The action of oxymetazoline results in vasoconstriction. In addition, the local application of the drug also results in vasoconstriction due to its action on endothelial postsynaptic α2 receptors; systemic application of α2 agonists, in contrast, causes vasodilation because of centrally-mediated inhibition of sympathetic tone via presynaptic α2 receptors.