This book concerns a polyglot medical manuscript, Kitab al-Musta'ini, by Jewish physician, Ibn Baklarish for his Muslim patron, al-Musta'in bi-llah (reg. Saragossa 1085 - 1110). Tables give properties, uses, and names in other languages, of over 700 medicinal substances. Latin and Romance annotations attest to Christian readers.
Devoted to Constantine the African, this text sheds light on the School of Salerno and the formation of a medieval corpus in the High Middle Ages. Constantine's Pantegni appeared in the 11th century and covered the whole area of medicine.