This video gives a detailed introduction to pharmacology and related pharmacodynamics. Its definition, its mechanism and interaction of drugs in combination with everyday bodies normal function. TIMELINE: 0:00 Introduction 0:10 Types of drug interactions 0:24 Addition reaction 0:54 Antagonistic interaction 1:16 Synergistic interaction 1:40 Incompatible interaction 2:06 Medication failure 2:56 Physical relationship 3:20 Types of adverse reaction 3:56 Anaphylaxis in relation to drugs