ResCo is a respiratory support formula containing Licorice, Mullein, Euphorbia, Grindelia, Ginger, Fennel and Thyme essential oil to support healthy mucous membranes. These herbs have been traditionally used in herbal preparations to support healthy mucous membranes within the respiratory tract, support the body's normal cough reflex, encourage healthy mucus function and normal secretion removal from the respiratory system and soothe mucous membranes.