Inula, Elecampane. A tonic to the nutritive functions and to the respiratory and urinary tract. Its extractive principle, helenin, is said to possess antiseptic properties useful in typhoid, tuberculosis, and erysipelas. This drug is given in three leading indications, viz., in atonic conditions of the gastro-intestinal tract, as a tonic following prolonged respiratory diseases, and in catarrhal states of the genito-urinary organs. Dose, f.e , 20 to 60 I. Helenin, 1-12 to 1/4 gr.