publisher publishes instructions and regulations for the purpose of (official) preparation of medicines, and for following of which the authority prescribed to the pharmacists and the doctors, even when this obligation is not expressed in the title of the book, must be accepted in its entirety. The development of pharmacopoeia books cannot be shown only through the pharmacopoeia in the narrow sense of the word because of the fact that for such books there were more diverse contents and names that were used and were the characteristic of the time and environment in which such books arise. A list of pharmacopoeias shows that at least thirty different names have been used to designate these collections and/or these scientific papers on drugs. Characteristics of these books used by pharmaciststo 1851, andUnited States Pharmacopoeia from 1820, 1831, 1842, 1851, 1863 and 1873.

At that time was created the most advanced pharmacopoeia of that time, Pharmacopoeia Borussica, also featured plant descriptions. Dual or binary drug names were a common thing, and they consisted of the name of the main plant species and of the herbaceous part of the plant that was used, e.g. Herba digitalis and/or Digitalis Folia. This practice was common in Germany and the UK. It responded very well to the needs of pharmacists, as at a time when hundreds of herbal drugs were still in the pharmacy, which were partially derived from the same plant, greatly facilitated differentiation. Drug names that consisted of one word had the advantage of a short name, but they were less