Discover the prescription in the display case, written by the physician Dr Gressly for Mr Voitel. Based on this prescription, his medicine was prepared in the hospital pharmacy by the hospital sisters. In addition to opium, it also contained a syrup made from ipecacuanha roots (emetine root). The prescription represents a classic formulation of a cough syrup around 1900. The codeine contained in the opium suppressed the cough reflex. The debate surrounding addictive substances such as opium continues to this day. The opioid crisis in the United States, triggered by the careless prescription of strong painkillers and the misuse of the analgesic and anaesthetic fentanyl, remains a highly topical issue. While today China is criticised as a supplier of fentanyl components, in the mid-19th century, China criticised Great Britain for the illegal import of opium.