KOSYPHAN

This brand name is authorized in Hong Kong

Active ingredients

The drug KOSYPHAN contains a combination of these active pharmaceutical ingredients (APIs):

1 Chlorphenamine maleate
UNII 3U6IO1965U - CHLORPHENIRAMINE

Chlorphenamine is a potent antihistamine (H1-antagonist). Antihistamines diminish or abolish the actions of histamine in the body by competitive reversible blockade of histamine H1-receptor sites on tissues. Chlorphenamine also has anticholinergic activity.

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2 Demorphan
UNII 9D2RTI9KYH - DEXTROMETHORPHAN HYDROBROMIDE

Dextromethorphan is a non-opioid antitussive drug. The major metabolite of dextromethorphan, dextrorphan, binds with high affinity to σ-receptors to produce its antitussive activity without exhibiting the classic opiate effects that occur from binding into μ- and δ-receptors. In larger than therapeutic doses, dextrorphan is also an antagonist of N-methyl-D-aspartate (NMDA) receptors.

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3 Guaifenesin
UNII 495W7451VQ - GUAIFENESIN

Guaifenesin is an expectorant the action of which promotes or facilitates the removal of secretions from the respiratory tract. The precise mechanism of action of guaifenesin is not known; however, it is thought to act as an expectorant by increasing the volume and reducing the viscosity of secretions in the trachea and bronchi. In turn, this may increase the efficiency of the cough reflex and facilitate removal of the secretions. Guaifenesin is over-the-counter drug for the treatment of cough and common cold.

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4 Phenylpropanolamine
UNII 8D5I63UE1Q - PHENYLPROPANOLAMINE HYDROCHLORIDE

Phenylpropanolamine is a sympathomimetic agent which is used as a decongestant and appetite suppressant. It was commonly used in prescription and over-the-counter cough and cold preparations. Although originally thought to act as a direct agonist of adrenergic receptors, phenylpropanolamine was subsequently found to show only weak or negligible affinity for these receptors, and has been instead characterized as an indirect sympathomimetic which acts by inducing norepinephrine release and thereby activating adrenergic receptors.

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Authorization and marketing

This drug has been assigned below unique identifiers within the countries it is being marketed:

Country Identification scheme Identifier(s)
Country: HK Department of Health Drug Office Identifier(s): 34834

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