Stop use and ask a doctor if, sore mouth symptoms do not improve in 7 days, cough lasts more than 7 days, tends to recur, or occurs with fever, rash, or persistent headache. These could be signs of a serious condition. Keep out of reach of children. Warnings: sore throat warning: if sore throat is severe, persists for more than 2 days, is accompanied or followed by fever, headache, rash, nausea, or vomiting, consult a doctor promptly. These may be serious. Ask a doctor before use if you have, cough that lasts or is chronic such as occurs with smoking, asthma, or emphysema, cough that occurs with too much phlegm (mucus).