Kitāb al-Jāmiʿ li-Mufradāt al-Adwiya wa-l-Aghdhiya , dated Ibn al-Bayṭār's largest and most widely read book is his
Compendium on Simple Medicaments and Foods (). It is a
pharmacopoeia (pharmaceutical encyclopedia) listing 1400 plants, foods, and drugs, and their uses. It is organized alphabetically by the name of the useful plant or plant component or other substance—a small minority of the items covered are not botanicals. For each item, Ibn al-Bayṭār makes one or two brief remarks himself and gives brief extracts from a handful of different earlier authors about the item. The bulk of the information is compiled from the earlier authors. The book contains references to 150 previous Arabic authors, as well as 20 previous Greek authors. One of the sources he quotes most frequently is the
Materia Medica" of
Dioscorides who was inspired by Magon, another Amazigh, having also written an Arabic commentary on the work. Another book often cited by him is Book Two of the
Canon of Medicine of
Ibn Sīnā (Avicenna). Both of those sources have similarities in layout and subject matter with Ibn al-Bayṭār's own book, but Ibn al-Bayṭār's treatments are richer in detail, and a large minority of Ibn al-Bayṭār's useful plants or plant substances are not covered at all by Dioscorides or Ibn Sīnā. In modern printed edition, the book is more than 900 pages long. As well as in Arabic, it was published in full in translation in German and French in the 19th century. Ibn al-Bayṭār provides detailed chemical information on the
rosewater and orangewater production. He mentions: The scented
shurub (
syrup) was often extracted from flowers and rare leaves, by means of using hot
oils and
fat, they were later cooled in
cinnamon oil. The oils used were also extracted from
sesame and
olives.
Essential oil was produced by joining various retorts, the steam from these retorts condensed, combined and its scented droplets were used as
perfume and mixed to produce the most costly medicines.
Kitāb al-Mughnī fī al-Adwiya al-Mufrada Ibn al-Bayṭār's second major work is
Kitāb al-Mughnī fī al-Adwiya al-Mufrada, كتاب المغني في الأدوية المفردة .an
encyclopedia of
Islamic medicine which incorporates his knowledge of plants used extensively for the treatment of various ailments, including diseases related to the head, ear, eye, etc. ==See also==