Dr. Wolz Zell GmbH has been producing natural and demonstrably effective preparations for the maintenance of holistic health in Geisenheim in Germany since 1969. The foundation stone was laid over 50 years ago by the biotechnologist Siegfried Wolz, who, together with the Nobel Prize winner for medicine Feodor Lynen, researched a substance with which our body cells could be supplied in the best possible way. In 1969, he achieved a breakthrough with the production of Dr. Wolz® enzyme yeast cells which can be found in the Zell Oxygen® product line. Today, Dr. Wolz offers a wide range of preparations for intestinal health, the immune system, cardiovascular health and the health of children and athletes in particular. As an microbiome specialist, the company produces high-quality lactic acid bacteria preparations according to the strictest quality criteria such as the HACCP concept, which also fulfils the requirements of ISO 9001. In addition, numerous positive customer reports and scientific studies testify to the effectiveness and quality of Dr. Wolz preparations.