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The common cold is a self-limited contagious illness that can be caused by a number of different types of viruses. The common cold is medically referred to as a viral upper respiratory tract infection. Symptoms of the common cold may include cough, sore throat, nasal congestion, runny nose, and sneezing. More than 200 different types of viruses are known to cause the common cold, with rhinovirus causing approximately 30%-35% of all adult colds. Other commonly implicated viruses include coronavirus, adenovirus, respiratory syncytial virus, and parainfluenza virus. Because so many different viruses can cause a cold and because new cold viruses constantly develop, the body never builds up resistance against all of them. For this reason, colds are a frequent and recurring problem. In fact, children in preschool and elementary school can have six to 12 colds per year while adolescents and adults typically have two...
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The most common effects associated with antihistamines have been drowsiness sedation, dryness of mucous membranes, and gastrointestinal effects. Serious side effects with oral antihistamines, sympathomimetics, and antitussives have been rare. Other adverse reactions may include:
Dermatologic - urticaria, drug rash, photosensitivity, pruritus.
Cardiovascular - hypotension, hypertension, cardiac arrhythmias, palpitations.
Central Nervous Systems (CNS) - disturbed coordination, tremor, irritability, insomnia, visual disturbances, weakness, nervousness, convulsion, headache, euphoria, and dysphoria.
Genitourinary - urinary frequency, difficult urination.
Gastrointestinal - epigastric discomfort, anorexia, nausea, vomiting, diarrhea, constipation. Respiratory - tightness of the chest and wheezing, shortness of breath. Hematologic - hemolytic anemia, thrombocytopenia, agranulocytosis.
MAO inhibitors may prolong and intensify the anticholinergic effects of sympathomimetic agents. Patients may develop hyperpyrexia, hypotension, nausea, myoclonic leg jerks, and coma following coadministration of MAO inhibitors and dextromethorphan. Thus, concomitant administration of Deconsal® DM Tannate Chewable Tablets and MAO inhibitors should be avoided (see "CONTRAINDICATIONS").
Last reviewed on RxList: 5/4/2009
This monograph has been modified to include the generic and brand name in many instances.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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