Mullein Herb benefits are used for cough, whooping cough, tuberculosis, bronchitis, hoarseness, pneumonia, earaches, colds, chills, flu, swine flu, fever, allergies, tonsillitis, and sore throat. Used for asthma, diarrhea, colic, gastrointestinal bleeding, migraines, joint pain, and gout. It is also used as a sedative and as a diuretic to increase urine. Applied to the skin for wounds, burns, hemorrhoids, bruises, frostbite, and skin infections (cellulitis). Soften skin and protects.