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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:
Gastrointestinal - epigastric discomfort, anorexia, nausea, vomiting, diarrhea, constipation. Respiratory - tightness of the chest and wheezing, shortness of breath. Hematologic - hemolytic anemia, thrombocytopenia, agranulocytosis.
Read the Deconsal DM (phenylephrine, pyrilamine maleate, and dextromethorphan hbr) Side Effects Center for a complete guide to possible side effects
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").This monograph has been modified to include the generic and brand name in many instances.
Last reviewed on RxList: 11/29/2016
Additional Deconsal DM Information
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