In the history of Islamic Medicine, honorable physicians have risen; however, some of them are less well-known than the others. Abu Ja’far Ahmad ibn Ibrahim Jazzar is one of the students of the medical school of Kairouan, who was scientifically active during the Fatimid Caliphate (297-358 A.H/ 909-969 A.D). The scientific works of this knowledegable scientist manifest his expertise and skill in lexicon, philosophy, medicine, and branches related to medicine, especially pharmacology. Tibb al-Fuqara’ va al-Masakin [medicine for the poor and destitute] is one of his most enduring medical works with considerable fame. This research tries to study the details of Ibn Jazzar’s scientific life as well as his works remained in the field of medicine.

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