 He has a pharmaceutical doctorate from the University of Münster (1977), a medical doctorate from the University of Giessen (1982), and the venia legendi from the University of Cologne (1990).Günter Ollenschläger worked as a research pharmacist from 1975 until 1981, and as a university physician from 1983 until 1990, working in the fields of pharmacokinetics, tumor related malnutrition, and metabolism.Ollenschläger joined the German Medical Association as director of Continuing Medical Education from 1990 until 1995.