Sore Throat Warning: If sore throat is severe, persists for more than 2 days, is accompanied or followed by fever, headache, rash, swelling, nausea, or vomiting, consult a doctor promptly. If sore mouth symptoms do not improve in 7 days, see your dentist or doctor promptly. Ask a doctor before use if you have persistent or chronic cough such as occurs with smoking, asthma, or emphysema, cough accompanied by excessive phlegm (mucus).. Stop use and consult doctor if cough persists for more than 7 days, tends to recur, or is accompanied by fever, rash, or persistent headache. These could be signs of a serious condition, sore throat is severe, or irritation, pain or redness lasts or worsens, sore mouth does not improve in 7 days.. If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children. Do not use if bag is torn or open.