AstraZeneca Czech Republic is a subsidiary of the international pharmaceutical behemoth known as AstraZeneca. It markets products such as heartburn reliever Nexium, local anesthetic Xylocaine, and endometriosis treatment Zoladex in the Czech Republic. It also conducts clinical trials on potential drug candidates in other parts of Central and Eastern Europe, such as Bulgaria, Hungary, Poland, Romania, and Slovenia. It focuses its research efforts primarily on the medical fields of gastroenterology, gynecology, and oncology, as well as bone and joint, cardiovascular, infectious, and respiratory diseases.