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Dallergy description. Antihistamine, decongestant, and anticholinergic combinations are used to treat the nasal congestion (stuffy nose) and runny nose caused by allergies and/or the common cold. Antihistamines work by preventing the effects of a substance called histamine, which is produced by the body. Histamine can cause itching, sneezing, runny nose, and watery eyes. The antihistamine contained in these combinations is chlorpheniramine. The decongestants in these combinations, phenylephrine, and pseudoephedrine produce a narrowing of blood vessels. This leads to clearing of nasal congestion, but it may also cause an increase in blood pressure in patients who have high blood pressure. Anticholinergics, such as atropine, hyoscyamine, methscopolamine, and scopolamine may help produce a drying effect in the nose and chest.
Some brand names: - AH-chew - Antihistamines, Decongestants, and Anticholinergics - D.A. Chewable - Dallergy - Dura-Vent/DA - Extendryl - Extendryl JR - Extendryl SR - Mescolor - OMNIhist L.A. - Stahist |