Therapy options. Bronchitis therapy is directed at cough suppression and thinning of mucus to help with elimination/expectoration. Otc cough suppressants such as dextromethorphan may be helpful but in some situations, the cough is due to bronchospasm and may respond better to bronchodilators such as albuterol. Avoidance of irritants like tobacco smoke is also advisable. Discuss appropriate options with your md.