Colds and allergies may produce mucus that drains down the back of
the throat (
postnasal drainage). Home treatment may be all that is
needed to provide relief if you have a productive cough and postnasal drainage
but do not have other symptoms.
A productive cough in a person who smokes is often a sign of lung
damage. For smokers, the most effective way to treat a cough is to stop
smoking. A change in the cough or in the color or quantity of sputum may
mean a bacterial lung infection.
A productive cough is a more serious when:
It produces sputum from the lungs (not postnasal
The sputum is rust-colored or contains bright red
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