Al-Razi, known as “Rhazes” in the West, was a physician, philosopher, and scholar who made fundamental contributions to many scientific fields, especially medicine, pioneering in the fields of pediatrics, obstetrics, and ophthalmology. A special feature of his medical system was that he favored cure through correct and regulated food, avoiding excessive use of chemical drugs. Moreover, he tested remedies on animals in order to evaluate their effects before using them on humans.