INTRODUCTION
The history of the human race has also been the history of drug abuse. In itself, the use of drugs does not constitute an evil. Drugs, properly administered, have been a medical blessing. For example, herbs, roots, bark leaves and plants have been used to relieve pain and help control diseases. However, over the past few decades, the use of illegal drugs has spread at an unprecedented rate and has reached every part of the world. According to the United Nations Office on Drugs and Crime (UNODC) report (2005), some 200 million people, or 5 percent of the total world’s population aged 15 - 64 have used drugs at least