Larissa is a researcher at the Dept. of Clinical Pharmacy at the University of California, San Francisco (UCSF), after 1.5 years with Psychiatry. In 2017, she was appointed as a consultant in Drug Use Epidemiology at the United Nations Office on Drugs and Crime (UNODC) in Vienna. She received her Ph.D. from the University of Zurich at the Swiss Research Institute for Public Health and Addiction (ISGF). Larissa is a member of the Core Research Team of Global Drug Survey (GDS) aiming to make drug use safer, regardless of the legal status of the drug. She is also a leader of the Science Policy Group (SPG) and the Psychedelic and Entheogen Academic Council (PEAC) at UCSF as well as a member of the U.S. National Science Policy Network (NSPN). In addition, she serves on several committees to facilitate international relations, diversity, and early career networks at the European Society of Prevention Research (EUSPR), the International Society of Substance Use Professionals (ISSUP), the International Society for the Study of Drug Policy (ISSDP), the Society for Prevention Research (SPR), and the College on Problems of Drug Dependence (CPDD).