PHARMA SLEZ®, syrup with althaea officinalis and chamomile, because of the mucus, which covers mucous membrane of pharynx, reduces the stimulus that causes the cough reflex, and tannins from chamomile enable creation of a film and have an anti-inflammatory effect. In this way, PHARMA SLEZ®, covering mucous membrane of respiratory tract, has a beneficial effect on cough, especially when it is consumed in the evening, before sleep, because prevents sleep interruptions caused by cough.