Dr.Wolz Zell GmbH manufactures only products with ingredients that have been scientifically researched and which have proven effects. All the products contain natural, biological ingredients which are derived exclusively from natural sources. They are manufactured in a demanding process, taking particular care to ensure good bioavailability of the biological substances. This is because the ingredients are more effective when they are absorbed in their natural form. The synergistic relationship between the active agents is of central importance.