For respiratory support in a convenient liquid form, turn to Herb Pharm Lung Expectorant™. Featuring proprietary extract blend of Yerba Santa, Elecampane, Grindelia, Usnea, Thyme, Lobelia and Ginger with an extraction rate of 105 mg fresh herb & 110 mg dry herb per 0.7 ml., these herbs are individually extracted to ensure a wide range of plant compounds. Gluten free.