1. General Pharmacology

An Introduction

The word pharmacology is derived from two Greek words, pharmacon meaning a drug, and logos meaning an opinion or reason. It can be defined as

“The science which deals with the history, source, physical properties, chemical properties, compounding, biochemical effects, physiological effects, mechanism of action, absorption, distribution, biotransformation, excretion, therapeutic and other uses of drugs, is called pharmacology.”

“The study of a substance that interacts with the living system through chemical processes especially by binding to regulatory molecules and activates or inhibits normal body processes”

“The science of substances used to prevent, diagnose and treat disease.”

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