Medicines were compiled in books called pharmacopoeias. N.B. Listed as "cineole" in some pharmacopoeias. There are national and international pharmacopoeias, like the EU and the U.S. pharmacopoeias. There are numerous health centers, pharmacies and pharmacopoeias. TUDCA has been used in ancient Asian pharmacopoeias for its supposed beneficial effects. Some producers voluntarily follow the regulations for over-the-counter drugs or regional Pharmacopoeias. Until around 1900, medical recipes and most European pharmacopoeias were written in Latin. But pharmacopoeias mainly offered some basics and compounding instructions. Abu-Rayhan Biruni, Ibn Zuhr, Peter of Spain, and John of St Amand wrote further pharmacopoeias.