The main Substance is essential oils (0.75-6.3%), with a prevalent content of thymol or carvacrol. When excreted via the pulmonary alveoli, the drug has an antibacterial effect on the membrane of the breathing passages. It also promotes the excretion of secretion and expectoration. Flavonoids contained in the herb have a spasmolytic effect: expanding the lumen of the bronchi and therefore help shift secretions via ciliums of the upper respiratory tract. These effects are therapeutically used during inflammatory illnesses of the respiratory system and insufficient excretion of secretions.
From the substances contained, the most important is essential oils (2-3%) and the aromatic anethol (80-80%), which it contains. Anise essential oils are excreted through the lungs and have a positive effect on their activity. It increases the secretion of phlegm in the breathing passages and it has an antiseptic effect. In addition, it supports the cilium activity, which promotes expectoration.
From the substances contained, the most important is essential oils (1-3%) and the menthol (50 – 75%). Its amount influences the sensory and taste quality of the drug. The anti-inflammatory and antiseptic effects of menthol are used during inflammations of the upper respiratory tract. It also helps to release the nasal cavity and therefore facilitates breathing.