Do not use if outer package seal is broken. A persistent cough may be a sign of a serious condition. If a cough persists for more than 1 week, tends to recur, or is accompanied by a fever, rash or persistent headache, stop use and consult a doctor. Do not take this product for persistent or chronic cough such as occurs with smoking, asthma or emphysema, or if cough is accompanied by excessive phlegm (mucus), unless directed by a doctor. Consult a doctor before use in children younger than 8 years of age. If pregnant or nursing, consult a health professional before use. Keep out of reach of children. Safe to take with all other medications.