White horehound: traditionally used to relieve dry coughs in Western herbal medicine
Expectorants are medicines that help to expel respiratory mucus from the body.

White horehound is traditionally used in Western herbal medicine as an expectorant to relieve dry coughs, as well as to relieve spasms (which might sometimes occur when you have a cough).

Thyme: traditionally taken to ease coughs in Western herbal medicine
Thyme also belongs to the expectorant class of herbal medicines; it’s traditionally used to relieve mild upper respiratory tract congestion and cough, as well as symptoms of the common cold in Western herbal medicine.

Elecampane: traditionally known as a lung tonic in Western herbal medicine
In Western herbal medicine, elecampane is traditionally used to enhance lung health, and as an expectorant to relieve mild bronchial coughs and soothe irritated bronchial airways.

Chinese licorice: enhances lung health in traditional Chinese medicine
Chinese licorice is traditionally taken to moisten the lungs as a lung tonic to relieve productive coughs and sore throat in Chinese medicine.

And more!
Fusion Cough Lung Tonic Liquid also features the Chinese herbs houttuynia, balloonflower, aster and stemona.