“…Thus, α 1adrenoceptor agonists such as phenylephrine, are components of oral over-the-counter medications to alleviate the congestive symptoms of the common cold and influenza. In addition, the imidazolines, oxymetazoline and naphazoline, are common components of topical nasal decongestants, mydriatic eye drops, and more recently dermatological formulations for the treatment of facial erythema in rosacea (Kircik et al, 2018;Mota & Norris, 2016;Vaidyanathan, Williamson, Clearie, Khan, & Lipworth, 2010). Interestingly, oxymetazoline and naphazoline are low efficacy agonists with reasonable selectivity for α 1Aadrenoceptors (10-to 30-fold; Akinaga et al, 2013;Minneman, Theroux, Hollinger, Han, & Esbenshade, 1994), further supporting the relevance of this subtype in vasoconstriction.…”