[‚bī·ō‚kem·ə·kəl ‚fär·mə′käl·ə·jē] (medicine) The study of the effects of chemicals on biochemical reactions in living systems and the effects of these systems on the chemicals, that is, their metabolism.
biochemical pharmacology
bi·o·chem·i·cal phar·ma·col·o·gy
a branch of pharmacology concerned with the biochemical mechanisms responsible for the actions of drugs.