<p>Oxymetazoline Hydrochloride is an imidazoline derivative sympathomimetic amine. It is a direct agonist at &alpha;-adrenoceptors but has no action on &beta;- adrenoceptors. It is used as a topical agent on the nasal mucosa, produces a rapid and long acting vasoconstriction of the arterioles, thus reducing the blood flow and diminishing swelling of the mucosa. This results in improved potency of the airway and better drainage of the nasal sinus.</p>