<p>Fexofenadine Hydrochloride is an antihistamine with selective peripheral H1 receptor antagonist activity. It does not cross the blood brain barrier.<br />
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Pseudoephedrine is an orally active sympathomimetic amine and exerts a decongestant action on the nasal mucosa. This is recognized as an effective agent for the relief of nasal congestion due to allergic rhinitis.&nbsp;<br />
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Pseudoephedrine is both an &alpha;-and &beta;-adrenergic receptor agonist. It causes vasoconstriction via direct stimulation of &alpha;-adrenergic receptors of the respiratory mucosa. It also directly stimulates &beta;-adrenergic receptors causing bronchial relaxation, increased heart rate and contractility.</p>