The sugar-free cough linctus Combats cough: Koflet-SF Linctus is beneficial in both productive and dry cough for people suffering from diabetes mellitus. The mucolytic and expectorant properties reduce the viscosity of bronchial secretions and facilitate expectoration. Koflet-SF Linctus peripheral antitussive (cough suppressant) action reduces bronchial mucosal irritation and related bronchospasms. In addition, the antiallergic, antimicrobial and immune-modifying properties provide relief from cough. The demulcent action of Koflet-SF Linctus soothes respiratory passages.