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Risk of respiratory failure (eg, chronic bronchitis, emphysema or during asthma attack), persistent or chronic cough lasting for >3 week or cough accompanied by excessive secretions. High BP or heart problems, glaucoma, thyroid problems, diabetes, liver or kidney disease, enlarged prostate, bladder problems or difficulty in urinating. Discontinue use if fever gets worse or lasts >3 days or new symptoms occur.
Concomitant use w/ warfarin. May impair ability to drive or operate machinery.
