This text serves as a foundational survey of pharmacological principles, investigating the mechanisms of drug action and their physiological effects on the human body. J.H. Gaddum provides a structured overview of the field, synthesizing complex biochemical interactions into a format accessible to students. The work utilizes established medical research to categorize drug classes and their clinical applications, focusing on the integration of chemical theory with biological response.

Experts recognize this work as a classic pedagogical resource for preclinical medical and pharmacy students. Readers frequently note the clarity of the prose despite the inherent technical density of the subject matter.