He played a role in transmitting Persian medical terminology to Europe, and was the first European to make a serious study of Iranian medicine.

[5][3] In the process, he read many Persian and Arabic books on medicine, and he reportedly interacted with the learned people of Isfahan.

[5] He also reportedly paid many visits to the shops of the Isfahani druggists, pharmacists and chemists.

[5][6] In Safavid Persia: The History and Politics of an Islamic Society, the work is referred to as a "veritable encyclopaedia of Iran, including a few transcriptions that indicate the colloquial pronunciation of the time".

[3] As far as eastern languages are concerned; in addition to Arabic and Persian, Labrosse was proficient in Turkish.