“…It has got negligible action on ␣ 2 receptors and a low  receptor activity [1]. Phenylephrine is a synthetic compound with almost exclusively direct sympathomimetic action and relatively little indirect effects via the noradrenaline (norepinephrine) release pathway [2]. It is widely used as a decongestant either as an oral medicine or locally as a mucosa decongestant for unspecific and allergic conjunctivitis, sinusitis and nasopharyngitis.…”