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Promotes A Healthy Respiratory SystemHerbal Supplement Ryukakusan direct Mint Flavor Herbal Supplement is a dietary supplement in granular form that is to be taken without water. It dissolves instantly inside your mouth. It may be used whenever and wherever desired. One sachet is ideal for one adult use but the product can be taken by everyone starting with children three years of age (see Suggested Use).Stimulates the secretion of mucus from the inner surface of the trachea invigorates the cilia to remove sputum and therefore promotes a healthy respiratory system.