<; p >; use of N, n-bis (2-mercaptoethyl isoftalamida to treat chronic obstructive pulmonary disease (COPD), increase the levels of ascorbate and reduced risk of respiratory Morbidity and mortality; procedure to treat COPD, reduce the risk of morbidity and / or <; em >; <; / em >; mortality r Expiratory and relieve symptoms of COPD. <; / p >;USO DE N,N-BIS-2-MERCAPTOETIL ISOFTALAMIDA O UNA SAL FARMACÉUTICAMENTE ACEPTABLE DE LA MISMA PARA PREPARAR UN MEDICAMENTO ÚTIL PARA EL TRATAMIENTO DE LA ENFERMEDAD PULMONAR OBSTRUCTIVA CRÓNICA.