Boericke & Tafel Nighttime Cough & Bronchial Syrup is a natural homeopathic remedy that temporarily relieves coughs due to minor throat and bronchial irritation occurring with a cold or inhaled irritants. Soothes the throat. Helps loosen phlegm (mucus) and thin bronchial secretions to rid the bronchial passageways of bothersome mucus and drain bronchial tubes.