Indigo Herbs Indigo Herbs Mullein Flowers Tincture 100mlMullein Flowers Tincture is the active constituents of Verbascum extracted into ethanol. This traditional method maintains and preserves the naturally occurring constituents found in the plant. With a honey like scent, Mullein Flowers have a long history of traditional use. This herbal tincture can be added to water or fruit juice and taken when required.