Linctuses are oral viscous liquid preparations that are generally prescribed for the relief of cough. They contain medicament that has demulcent, sedative, or expectorant action. The usual dose is 5 ml. Linctuses should be taken in small doses, sipped and swallowed slowly without diluting with water to have the maximum and prolonged effect of medicament. The viscous vehicle soothes the sore membrane of the throat. Simple syrup or sorbitol is generally used as a vehicle.