Every day, millions of people in Germany visit a pharmacy, including many elderly and chronically ill patients. With age, the number of medications used increases. However, the growing complexity of therapy also raises the risk of adverse effects. What problems arise in medication therapy? How can therapy safety be ensured and optimized in an aging society? Raphael Sell presents the results of a nationwide project conducted by the Pharmacists' Chamber of Saxony-Anhalt, during which the medication of more than 1,000 patients in 300 pharmacies was documented and comprehensively analyzed. Identified problems were discussed by pharmacists with the patients and their treating physicians and resolved whenever possible. In his analysis, Sell describes the composition of the medication and evaluates the results.