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. These may be serious,
do not use in children under 6 years of age unless directed by a doctor.
persistent chronic cough such as occurs with smoking, asthma, or emphysema
cough accompanied by excessive phlegm (mucus)
cough persists for more than 1 week, tends to recur, or is accompanied by fever, rash, or persistent headache. These could be signs of a serious condition.
