Do u know about materia medica & Organon of medicine?

Answer 1

Yes, sort of but there are websites out there that can explain
it better detail than I can.
Materia medica is a Latin medical term for the body of collected knowledge about the therapeutic properties of any substance used for healing, what we would call a drug. The term was used from the period of the Roman Empire until the twentieth century, but has now been generally replaced in medical education contexts by pharmacology. In Latin the term literally means "medical matters". One of the most well-known early uses of the term was as the title of a work by the Greek pharmaco-botanist Dioscorides in the first century A.D., entitled de materia medica libri quinque (concerning medical matter in five volumes). This famous commentary covered about 600 plant drugs plus a number of therapeutically useful animal and mineral products.
The Organon of medicine is about medical philosophy and would
be too lengthy to post the entire content, so I will provide links you can read it instead.