Verbascum thapsus (Great or Common Mullein) is a species of mullein native to Europe, northern Africa and Asia, and introduced in the Americas and Australia. Verbascum thapsus Leaf decoctions or herbal teas were used for expectoration, consumption, dry cough, bronchitis, sore throat and hemorrhoids. Leaves were also smoked against pulmonary ailments, a tradition that in America was rapidly transmitted to Native American peoples. Verbascum thapsus Oil from the flowers was used against catarrhs, colics and, in Germany, earaches, frostbite, eczema and other external conditions.Topical application of various V. thapsus-based preparations was recommended for the treatment of warts, boils, carbuncles, hemorrhoids, and chilblains, amongst others.
Purification of α-galactosidase from the roots of Verbascum thapsus L. was difficult to achieve using conventional methods due to the presence of coloured contaminants.