Fuente: WIPO "essential oil or extracts" The present invention refers to pharmaceutical composition on the basis of extracts/pulverized plant materials/essential oils of: lichen Old Man's Beard (Usnea barbata L.) and/or Greek oregano (Origanum heracleoticum L.) and/or Mountain tea (Satureja montana L.) and/or Winter savory (Satureja montana L.), as well as preparations in a form of compressed lozenges, solution, gel and spray for the application in the treatment of the inflammation of mucous membranes of the mouth and throat and for the preventive and therapeutic purposes in human and veterinary medicine.