Ask a doctor before use if you have persistent or chronic cough such as occurs with smoking, asthma, or emphysema a cough that occurs with excessive phlegm (mucus). Stop use and ask a doctor if cough persists for more than 1 week, tends to recur, or is accompanied by fever, rash, or persistent headache. A persistent cough may be a sign of a serious condition sore throat lasts more than 2 days or is accompanied by high fever, headache, rash, nausea, or vomiting. If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children. Sore throat warning: Severe or persistent sore throat or sore throat accompanied by high fever, headache, rash, nausea, and vomiting may be serious. Consult physician promptly. Do not use more than 2 days or administer to children under 3 years of age unless directed by a physician.