Ahmed Hegazy (also: Hegasy; Arabic , Aḥmad Ḥiǧāzī, born October 24, 1939, in Cairo; died February 5, 2021, in Leverkusen) was an Egyptian-German pharmacist. He conducted research in the Pharmaceutical Technology Department of Bayer from 1966 to 1999, during which time he invented a new galenic formulation for the active components nifedipine and nimodipine. By blocking calcium channels, the substance has a relaxing effect on vascular muscles and is therefore used for the treatment of hypertension. In 1991, Hegazy received the Otto Bayer Medal for the solubilization of poorly soluble ingredients such as nimodipine. His galenic invention is still the basis for many modern formulations at Bayer AG (A. Ohm).