Synonymy and Homonymy of Medicinal Plants in the Uppsala Monitoring Centre’s Adverse Drug Reaction database Hugo de Boer The research was initiated by the Uppsala Monitoring Centre, a research institute on adverse drug reactions, which is a WHO Collaborating Centre for International Drug Monitoring. The Uppsala Monitoring Centre collects all adverse drug reactions from the national centres for drug safety, and has over three million reports! Through careful statistical analyses and examination drugs that are hazardous to human health can be removed from the market. Adverse drug reaction monitoring is not only done for conventional medicine, but also for herbal medicine. Herbal medicine has been increasingly popular during the last decennia, and many people underestimate its potential and possibility for causing interactions with other medicine. Fast and accurate drug safety monitoring requires the nomenclature of ingredients in herbal medicine to be correct and complete. However, the varying reliability in giving names of ingredients in herbal medicine by producers and manufacturers causes much difficulty in tracing adverse drug reactions to the source. To gain more background information of synonyms and vernacular names of the plant species used in herbal medicine the Uppsala Monitoring Centre has engaged in a collaboration project with the Department of Systematic Botany of Uppsala University. The purpose of this collaboration has been getting to know the full synonymy of all plant species occurring in their database of adverse drug reactions. This research thesis presents some 8000 synonyms and vernacular names of plant species in their database. It is the result of half a year of intense bibliographical research into medicinal plant names. 20 p Examensarbete I biologi Department of Systematic Botany Institution for Evolution, Genomics and Systematics Evolutionary Biology Centre Uppsala University