EIS Eczacibasi Ilaç, Sinai ve Finansal Yatirimlar Sanayi ve Ticaret A.S. (ECILC.IS) operates as a holding company focused on health and real estate development sectors in Turkey and internationally. Founded in 1951 and headquartered in Istanbul, Turkey, the company functions through its subsidiaries and affiliates, including Eczacibasi Ilac Ticaret A.S., EHP Eczacibasi Health Care Products Joint Stock Co., and Eczacibasi Gayrimenkul Gelistirme ve Yatirim A.S.; its health segment produces and sells human health medicines such as cephalosporins and penicillins, veterinary drugs, and personal care products including body and facial creams, hair gels, and deodorants; the real estate development segment develops properties, leases serum facilities, and provides land development and project management consulting services. As a subsidiary of Eczacibasi Holding A.S., it maintains a holding structure without direct production activities, instead acting as a strategic partner in healthcare, building products, and other industries while directly engaging in real estate development. Recent developments include a 2025 ordinary general assembly resolution for compliance with Turkish Commercial Code and Capital Markets Law, alongside historical strategic shifts such as the 2007-2009 transfer of shares in health product subsidiaries to Zentiva N.V. and a 2008 name change to its current title, with ongoing investments like increased stakes in affiliates such as Eczacibasi-Monrol Nükleer. The company lists on Borsa Istanbul with 18.76% free float and exports pharmaceuticals to the Middle East, Russian Federation, Central Asia, and Eastern Europe.