5) The treatment result of D. D. S, injection will be reported later. 6) Toxic manifestations were observed such as slight anemia in 3, neuralgia in 2 and palsy of sural nerve in 1 patients. Erythema nodosum leprosum appeared in 4 cases. 7) D. D. S, has an excellent therapeutic effect upon leprosy and can be administered without any fear.