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warnings
WARNINGS This product contains an antihistamine that may cause drowsiness and may have additive central nervous system (CNS) effects with alcohol or other CNS depressants (e.g., hypnotics, sedatives, tranquilizers). Antihistamines should be used with caution in patients with stenosing peptic ulcer, pyloroduodenal obstruction, and urinary bladder obstruction due to symptomatic prostatic hypertrophy and narrowing of the bladder neck. Administration of dextromethorphan may be accompanied by histamine release and should be used with caution in atopic children.
ADVERSE REACTIONS 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.