A large quantity of scientific publications and practical studies are concerned with the applications and operation of essential oils and plant extracts. Research revealed which are the most suitable types of oregano. Ropapharm International B.V uses the oregano types Oreganum Vulgare ssp and Oreganum Ornythes in their products. These variants have an extremely high level of Carvacrol, thymol and p-cymen. The oregano types of which we are using in the products of Ropapharm International B.V. are highly active!