This formula will help clear phlegm and mucus from the lungs. Osha root helps clear mucus from the sinuses and lungs by increasing expectoration; this relieves congestion and makes breathing easier. Osha root also increases blood circulation to the lungs, which increases dilation during constriction. Thyme is a powerful antiseptic and is used for lung ailments. Marshmallow and Fenugreek help expel phlegm and relax the bronchial tubes while soothing and healing.