When a cough lasts more than a week most of us think we need an antibiotic. Experts from the University of Georgia explained that acute bronchitis (an acute illness with hacking cough) can last for weeks.
Annals of Family Medicine
They found that patients expect their cough to be resolved within one week to up to a maximum of nine days. In reality, a bronchial illness (which includes coughing) takes an average of 18 days to clear up.
Antibiotics are ineffective against coughs caused by a cold virus
Very persistent coughs may be a sign of something more serious
If patients are being prescribed antibiotics when they do not yet need them, there is a much greater risk of bacterial resistance