ABSTRACT
After completing this chapter, the reader should be able to:
define the term ‘pharmacodynamics’;
describe the chemical, physical and physicochemical modes of action of some drugs;
explain the nature of competitive and non-competitive inhibitors of enzymes;
describe the use of competitive inhibitors of enzymes in therapeutics;
describe the concept of receptors and their significance;
differentiate between agonists and antagonists and their action on receptors;
list the uses that enzymes can have in therapeutics.
