Maarten Jacobus Postma is Professor in Pharmacoeconomics at the University of Groningen (The Netherlands), Department of Pharmacy, Unit of PharmacoEpidemiology & PharmacoEconomics. Next to teaching, he coordinates the research of a group of ten PhD students, one postdoctoral researcher and five (annually changing) MSc students. The majority of this research is related to the cost-effectiveness of vaccinations and methodological issues surrounding this (dynamic modeling and discounting), besides other health-economic and pharmacoeconomic topics. He is President of the section Public Health Economics of the European Public Health Association (EUPHA). Furthermore, he is on the Scientific Advisory Board of two worldwide consultancy firms. Finally, he advises the Dutch government on the reimbursement of new drugs and vaccines in two high-impact committees (Health Council and Committee Pharmaceutical Help). Here, Professor Postma speaks to Expert Review of Clinical Pharmacology about the dynamic field of pharmacoeconomics.