About pseudoephedrinealpha/beta adrenergic agonist, a phenethylamine derivative, a nasal decongestant.mechanism of action of pseudoephedrineit is a nasal decongestant with alpha-2 agonistic action. it produces local vasoconstriction, reduces blood flow, and causes shrinkage of mucosa which provides relief of nasal congestion. it reduces oedema of the nasal mucosa, thus improving ventilation, drainage and nasal stuffiness.indications for pseudoephedrine1. nasal and eustachian tube congestion 2.upper respiratory tract congestion 3.adjunctive therapy in symptomatic relief of common cold, allergic rhinitis, blocked eustachian tube, and upper respiratory tract infections
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