Pharmacy is a branch of medical science and practice. It belongs to that part of medical science formerly known as pharmacology, or the science of drugs. Unfortunately the term pharmacology has been used in a restricted sense, being applied more particularly to experimental vivisection of animals for determining the physiologic effects of drugs. The word pharmacodynamics more properly describes that branch of medical science. Gould defines pharmacology as "A treatise on the nature and properties of substances used as medicines, or those employed in their preparation," and according to the same authority, pharmacodynamics is "The science of the powers and effects of medicines."
H. C. Wood, in the introduction to his classic work on materia medica and therapeutics, clearly defines the meaning of terms used in this connection by saying, "Although pharmacy, or the science of preparing medicine, is entirely distinct from therapeutics, or the science of the application of
STEWART FE. THE PRACTICE OF PHARMACY AS A LIBERAL PROFESSION.. JAMA. 1896;XXVII(2):74–80. doi:10.1001/jama.1896.02430800016001f