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warnings
Warnings Do not exceed recommended dosage Ask a doctor before use if you have a cough that is accompanied by excessive phlegm (mucus) a persistent or chronic cough such as occurs with smoking, asthma, chronic bronchitis, or emphysema. Stop use and ask a doctor if cough persists for more than 1 week, tends to recur, or is accompanied by a fever, rash, or persstent headached. A persistent cough may be a sign of a serious condition.