Herbal supplement. Formulas by Michael Tierra L.AC., O.M.D. Mullein Lung Complex is a premier mullein and wild cherry bark compound. It combines the demulcent effects of mullein and licorice, the tonifying and soothing characteristics of ophiopagon and platycodon, and the pungent qualities of elecampane, ginger, and cinnamon (cassia). Life Style Recommendations: Avoid mucus-forming foods such as dairy and white flour products, as well as the excessive consumption of cold and raw foods in the cold winter season.