What medicine can i buy over-the-counter for bronchitis?

Acute bronchitis....: Acute bronchitis is an infection of the airways, usually caused by a viral or bacterial infection. If a bacterial infection is present, antibiotics are sometimes needed. If a virus is the culprit, treatment is largely symptom relief, including drinking plenty of fluids, rest, etc. Saline nasal spray can help with nasal congestion, throat lozenges can help the sore throat, etc. If worsening, see dr.