Traditionally, Lobaria pulmonaria has been used to treat respiratory conditions ranging from minor coughs to tuberculosis. Chemicals in Lobaria pulmonaria may have a soothing effect on irritated lung tissue when Lobaria pulmonaria is taken orally. It is also thought to be mildly effective in thinning mucus and promoting mucus removal from the nose and lungs. Additionally, Lobaria pulmonaria may have some antibiotic properties. All of these effects may make it useful for treating conditions of the respiratory tract, but more effective prescription and non-prescription products are available currently.