The aromatic odor emitted by the herbs can stimulate human nasal mucosa to increase the secretion of antibody- immunoglobulin A(IgA) on the nasal mucosa which can kill virus and thus reducing the chance of catching a cold or a flu

Ingredients: Rhubarb, Notopterygium incisum, Asarum, Euodia rutaecarpa，Agastache rugosa， Eupatorium fortunei， Bupleurum， Atractylodes lancea Thunb

not for pregnant ladies