International Society for Pharmacoepidemiology (ISPE) is an organization that brings together scientists and healthcare professionals from around the world to share research and ideas about how medicines can be used safely and effectively. People who work in pharmacoepidemiology study the ways that medicines are used in the real world. They look to see if a medicine is working when it's used by a large group of people, and if there are any possible risks or side effects. Through the ISPE, these researchers and healthcare professionals can connect and share their studies with each other and improve the safety and quality of medicines.