Al-Razi and Islamic medicine in the 9th century.

Although Baghdad was only 50 years old in the 9th century, it was at the peak of its political power, a powerhouse of learning and the leading medical centre of the time. It was there that many important Greek works were translated into Arabic, including Dioscorides's Materia medica, which formed the basis for Arabic pharmacology. While Islamic physicians revered Greek medicine and seldom questioned it, they began to add comments and to contribute views in the 9th century CE, and observations of their own.