Background:

Xylometazoline hydrochloride is an α-adrenoceptor agonist commonly used as nasal decongestant.Target: α-AdrenoceptorXylometazoline hydrochloride is a nasal decongestant spray that constricts nasal blood vessels and increases nasal airflow, enabling patients with a blocked nose to breathe more easily. Xylometazoline hydrochloride is an effective and well-tolerated decongestant nasal spray that significantly relieved nasal congestion compared with placebo in the common cold and provided long-lasting relief with just 1 spray, helping patients to breathe more easily for a longer period of time [1]. Xylometazoline hydrochloride exhibits in radioligand competition studies higher affinities than the catecholamines adrenaline and noradrenaline at most α-adrenoceptor subtypes. Xylometazoline behaved at α(2B) -adrenoceptors as full agonists [2].

参考文献:
[1]. Eccles, R., et al., The nasal decongestant effect of xylometazoline in the common cold. Am J Rhinol, 2008. 22(5): p. 491-6.
[2]. Haenisch, B., et al., Alpha-adrenoceptor agonistic activity of oxymetazoline and xylometazoline. Fundam Clin Pharmacol, 2010. 24(6): p. 729-39.