chlorpheniramine + phenylephrine + methscopolamine

This is an **oral combination drug** used for the temporary relief of symptoms caused by allergies, hay fever, or the common cold, such as runny/stuffy nose, sneezing, itchy/watery eyes, sinus congestion, and throat irritation[1][2][3][5][6][7]. It contains three components: - **Chlorpheniramine** is a first-generation antihistamine acting as a histamine H1 receptor antagonist, decreasing allergic symptoms[2][3][9]. - **Phenylephrine** is a sympathomimetic decongestant acting as an alpha-1 adrenergic receptor agonist, reducing nasal congestion[6]. - **Methscopolamine** is an anticholinergic that reduces secretions (such as nasal, bronchial, and GI), additionally decreasing gastric acid[7]. Primary indications are symptomatic relief for upper respiratory tract symptoms caused by allergies or colds. It does not treat infection or underlying causes and is used as supportive symptomatic therapy.

Brand names

Dura-Vent DAEX-Histine SyrupExtendrylExtendryl Jr.Extendryl Sr.Extendryl SyrupDallergyDallergy CapletsDallergy SyrupChewableTriallRelcof PEResconSympak PDXOmnihist LA

Other names

chlorpheniramine + phenylephrine + methscopolamine