R57 drops are indicated for lung affections and pulmonary diseases (like pneumonia, tuberculosis). Indicates symptoms are weakness of the back, nocturnal perspiration, sensitivity to colds, disturbances of the blood circulation (cold feet), lack of appetite, paleness and limpid aspect of the face, following upon loss of blood. R57 exerts influence on the bronchial mucous membranes and stimulates endogenous immune response.